Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
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Volume 38, Issue 4
Displaying 1-50 of 64 articles from this issue
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  • The Properties of 2112 keV Level in 116Sn
    Yukichi Yamaguchi, Jian-zhi Runan(Gen), Teruaki Nagahara
    1975 Volume 38 Issue 4 Pages 911-916
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.911
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    The gamma-ray spectrum and the conversion-electron spectrum are measured in the decay of the 116mIn activity. Directional correlations are also measured for 818–1293 and 1097–1293 keV cascades. The M1-E2 mixing ratio δ, and the E0-E2 mixing ratio μk are obtained for 818.7 keV 22+→21+ transition to be δ=1.52−0.22+0.26, and μk≤6.1×10−4 respectively. The E2 branching ratio B(E2; 22+→0g+): B(E2; 22+→21+): B(E2; 22+→01+) is determined to be 0.0158:1.0:5.86.
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  • Internal Conversion Electrons and γ-Rays from the Decay of 206Po
    Masaaki Kanbe, Manabu Fujioka, Kazuo Hisatake
    1975 Volume 38 Issue 4 Pages 917-927
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.917
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    Internal conversion electrons and γ-rays following the decay of 206Po were measured with a π\sqrt2 iron-free β spectrometer and Ge(Li) detectors. The energies and intensities of 80 transitions including 60 new ones have been determined. Especially, we identified a new intense M1 transition of 10.84 keV. The multipolarities for 64 transitions were determined from K-conversion coefficients and L- and M-subshell ratios. γ-γ coincidences employing two Ge(Li) detectors were also performed.
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  • Level Structure of 206Bi Studied from the Decay of 206Po
    Masaaki Kanbe, Manabu Fujioka, Kazuo Hisatake
    1975 Volume 38 Issue 4 Pages 928-935
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.928
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    Using the results of our conversion-electron and γ-ray measurements in the decay of 206Po, a decay scheme of 206Po is proposed as follows: 0[6+], 59.91[4+], 70.76[3+], 82.83[5+], 200.40[4+], 352.71[(4, 3)+], 409.19[2+], 523.23[3+], 733.93[3+], 878.12[2+], 897.10[3+], 931.70[1+], 1077.89[2+], 1103.02 [2+], 1264.77[(2, 3, 4)+], 1389.45[1+], 1523.67[1+], 1567.57[1+(2+)] and 1600.14 keV [0+(1+)]. In the present decay scheme the previous discrepancy between spin-parities and log ft values has been removed. The low-lying states in 206Bi are interpreted in terms of one-proton, three-neutron-hole configurations outside the doubly closed 208Pb core.
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  • Energy Levels of 60Co Studied by the (d, p) Reaction
    Shuzo Uehara
    1975 Volume 38 Issue 4 Pages 936-944
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.936
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    Levels of 60Co were studied with 6.5 MeV deuterons via the 59Co(d, p) reactions with 18 keV resolution. A total of 75 excited levels were identified up to an excitation energy of 5 MeV. The ground state Q-value was found to be 5.274±0.007 MeV. Angular distributions of each proton groups were measured over the range 25°≤θ≤140°. Then the ln values were determined and the spectroscopic factors were extracted from comparison with the zero-range DWBA calculations. A sum rule analysis was made for the 2p3⁄2, 1f5⁄2 and 2p1⁄2 single particle states and Jπ assignments were made for low-lying levels by comparing with the (n, γ) reaction data.
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  • Elastic and Inelastic Scattering of 14N and 12C Projectiles by 12C and 28Si
    Isao Kohno
    1975 Volume 38 Issue 4 Pages 945-953
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.945
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    Elastic and inelastic scatterings of 14N and 12C particles by 12C and 28Si at energies from 65 to 88 MeV have been studied. Angular distributions of these elastic scatterings were measured over a laboratory angular range from 7 to 35 degrees at intervals of 1 or 1.5 degrees. These angular distributions were analyzed with an optical model, and the scattering amplitudes of all partial waves were obtained.
    Angular distributions of inelastic scattering exciting the 2+ and 3− states of 12C and 28Si were measured for 12C+14N, 12C+12C and 28Si+12C, and Mutual excitation of the 2+ states of 12C in 12C+12C and excitation of projectile 12C in 28Si+12C were also observed. These angular distributions were analyzed with DWBA using optical parameters fitted to the elastic scattering data. The deformation parameters of 12C obtained were consistent with the values previously reported, but those of 28Si obtained by the analyses were not consistent with ones previously reported.
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  • New Elementary Excitations in Normal Metals in Ultraintense Magnetic Fields
    Tadao Ishii
    1975 Volume 38 Issue 4 Pages 954-964
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.954
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    A bare-ion Larmor frequency in an applied magnetic field is usually washed out by the electron screening effect to result in an elementary excitation, “phonon·Alfvon”, while only in the “ ultraintense” field whose energy density is of the order of Fermi energy do we have a new excitation, “charged phonon”, besides the phonon·Alfvon.
    The charged phonons appear at the threshold field Hth determined nearly by Hth2⁄8π=ρvs2⁄2 where vs is the sound velocity and ρ is the mass density. The Alfvon part predominates the phonon part for the fields stronger than Hth (“phonon-vanishing effect”). The threshold field for these phenomena turns out 0.378 MOe for potassium.
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  • Electron Correlations at Metallic Densities, II. Quantum Mechanical Expression of Dielectric Function with Wigner Distribution Function
    Takemitsu Hasegawa, Masao Shimizu
    1975 Volume 38 Issue 4 Pages 965-973
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.965
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    The approximation method developed by Singwi et al. for classical distribution function is applied to the Wigner distribution function in a quantum system. In this way a quantum mechanical expression is derived for dielectric function of an interacting electron gas. Self-consistent numerical calculations of structure factor and dielectric function are carried out for an electron gas at metallic density of electrons. Pair distribution function, compressibility, correlation energy and dispersion relation of plasmons are numerically calculated from the calculated structure factor. The calculated results of the pair distribution function are found to be positive for the entire range of real metallic density of electrons.
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  • Theory of the Incommensurate Sinusoidal Spin-Density-Wave in Chromium and Its Alloys
    Akio Kotani
    1975 Volume 38 Issue 4 Pages 974-980
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.974
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    Self-consistent calculations of the incommensurate sinusoidal spin-density-wave in chromium and its alloys are carried out numerically by taking account of a sufficiently large number of Bloch states coupled by the exchange potential. The commensurate-incommensurate transition is also studied. The results are compared with those calculated by two less exact methods proposed in our previous papers. A discussion is given on the amplitudes of harmonics.
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  • Calculation of the Electronic Density of States and the Electric Conductivity of Random Alloys in the Coherent Potential Approximation
    Tohru Morita, Tsuyoshi Horiguchi, Charles C. Chen
    1975 Volume 38 Issue 4 Pages 981-988
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.981
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    Numerical calculations of the electronic density of states and the electric conductivity at zero temperature are reported within the coherent potential approximation for random binary alloys on the bcc lattice. The computations are made with the aid of an efficient procedure of evaluating the lattice Green function. A poor-conductive region is observed around the dip of the electronic density of states, just before the dip develops to a gap, for binary alloys with small minority densities.
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  • Theory of Cyclotron Resonance Lineshape in a Two-Dimensional Electron System
    Tsuneya Ando
    1975 Volume 38 Issue 4 Pages 989-997
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.989
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    The lineshape is studied in the simplest approximation free from the difficulty of divergence caused by a singular nature of the system. Characteristics of the linewidth are obtained for both short- and long-ranged scatterers. By assuming δ-potential scatterers, the lineshape is calculated explicitly as a function of the applied magnetic field in an n-channel inversion layer on Si (100) surface. At low temperatures, a Shubnikov-de Hass type oscillation appears in the lineshape. At high temperatures, it disappears and the lineshape becomes asymmetric around the resonance magnetic field.
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  • Susceptibility and Specific Heat for Cu(NH3)2·Ni(CN)4·2C6H6
    Hisao Kitaguchi, Shoichi Nagata, Takashi Watanabe
    1975 Volume 38 Issue 4 Pages 998-1002
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.998
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    The magnetic susceptibility and the specific heat of Cu(NH3)2·Ni(CN)4·2C6H6 in powder specimen has been measured between 0.2 and 20.4 K. Broad maximums are observed near 3 K in both experimental results, but the information for phase transition to the long range order can not be obtained down to 0.2 K. These results give the behaviour of low dimensional magnetic lattice for this crystal. The susceptibility data is explained as the one dimensional antiferromagnetic spin system with exchange interaction |J|=2.31 K.
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  • EPR Line-Widths of a One-Dimensional Heisenberg Antiferromagnet CsMnCl32H2O
    Yûichi Tazuke, Kazukiyo Nagata
    1975 Volume 38 Issue 4 Pages 1003-1010
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1003
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    Temperature and angular variation of EPR line-widths of a one-dimensional Heisenberg antiferromagnet CsMnCl32H2O have been measured at K-band frequency above its ordering temperature. A minimum in the angular variation appears at room temperature indicating the dominance of long-time, q∼0 diffusive modes of torque correlation function. However, the line-shape is Lorentzian because of non-negligible magnitude of interchain interactions. As the temperature is lowered, they broaden and the minimum in their angular variation disappears. These phenomena can be understood when one considers the growth of intrachain spin correlation of wave vector Q0 and the relative importance of short-time, Gaussian decay modes compared with the q∼0 modes. Line-widths are calculated within Kubo-Tomita’s framework and Fisher’s classical treatment. Good, quantitative agreement is attained particularly at low temperatures.
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  • Antiferromagnetically-Coupled Ferrimagnetic Layer Structure in CsMnF3 and Ni-Doped CsMnF3
    Yuji Yamaguchi, Toshiaki Sakuraba
    1975 Volume 38 Issue 4 Pages 1011-1019
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1011
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    Magnetization of CsMnF3 and Ni-doped CsMnF3 has been measured in the temperature range between 1.6K and 300K and in the magnetic field up to 70 kOe. It has been observed that the susceptibility increases very rapidly with decreasing temperature below TN and that the susceptibility of Ni-doped CsMnF3 decreases with increasing magnetic field. This behavior is qualitatively explained from a detailed analysis of the four-sublattice model of molecular field theory. The exchange integrals in CsMnF3 are evaluated to be JAB=6.8 K for the 180°-superexchange and JBB=4.5 K for the 90°-superexchange assuming that all the next-nearest exchange are 0.1 K. The 90°-superexchange between Mn and Ni in Ni-doped CsMnF3 are estimated to be about −8.5K. With these parameters CsMnF3 is found to have an antiferromagnetically-coupled ferrimagnetic layer structure.
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  • Cluster Approach to Magnon Raman Scattering in Cubic Antiferromagnet
    Soichi Miyata, Kazuko Motizuki
    1975 Volume 38 Issue 4 Pages 1020-1026
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1020
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    Magnetic properties and magnon Raman scattering are studied for a simple cubic antiferromagnet KNiF3 adopting cluster approximation. The spin states of the cluster consisting of a central spin and its six n. n. spins are solved self-consistently. The Néel temperature, sublattice magnetization, and spin-pair correlation function are calculated. Using the obtained cluster spin states, the temperature variations of the intensity distribution and total intensity are calculated for the Γ3+ mode over the whole temperature range below and above TN. Discussion is given for the comparison with observed results.
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  • Esaki Kink Effect in Graphite
    Sanchi Mizushima, Yoshiko Fujibayashi
    1975 Volume 38 Issue 4 Pages 1027-1031
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1027
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    Current vs voltage relation was measured on graphite at high electric fields under transverse magnetic fields at about 80 K. It was shown that in low mobility specimens the kink appears when the drift velocity of carriers reaches a value which roughly coincides with the velocity of transverse vibrations in the basal plane. On the other hand, in higher mobility crystals the above kink becomes weak, while another kink turns up at higher electric fields, which give as the critical drift velocity a value approximately corresponding to the velocity of in-plane longitudinal vibrations. This dependence of the Esaki effect upon the mobility of the specimen is attributed to the presence of defects which strengthen the interaction between carriers and transverse vibrations of the lattice.
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  • The Effect of Superconducting Transition on Plastic Properties of Lead and Lead Alloys
    Hideo Kojima, Takeshi Moriya, Taira Suzuki
    1975 Volume 38 Issue 4 Pages 1032-1041
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1032
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    The flow stress change Δτ associated with superconducting transition has been measured on lead and lead alloy crystals against the kind and the concentration of solute atoms as well as the amount of deformation and temperature. Δτ increases with applied stress rapidly in the beginning and slowly in later stages of deformation. The temperature dependence of Δτ cannot simply be expressed as proportional to (1−Bs⁄Bn), where Bn and Bs are the electronic drag coefficients of a dislocation in normal and superconducting states, respectively. Δτ of lead alloys is dominantly affected by the size misfit between solute and solvent atoms. As to the solute concentration c, Δτ∝cn, where n is first about 1/2 but increases with deformation. These results are discussed theoretically by taking account of the influence of the electron viscosity on both terms of the activation energy and the attempt frequency in the rate equation describing the thermally activated motion of a dislocation.
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  • Behavior of Triplet Excitons in Platinum Phthalocyanine Single Crystals
    Keiichi Kaneto, Yoshinobu Ido, Katsumi Yoshino, Yoshio Inuishi
    1975 Volume 38 Issue 4 Pages 1042-1047
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1042
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    Dependence of the phosphorescence emission of Platinum phthalocyanine single crystals around 971 nm on the magnetic field and on the incident laser intensity are investigated. The energy splitting of the spin sublevels of the lowest excited triplet state is about 8.5 cm−1 in zero field and about 12.4 cm−1 in the external magnetic field of 50 kG. The T–T (triplet-triplet) annihilation rate is estimated to be about 1×10−2 cm3/sec and the magnetic field dependence of the T–T annihilation reveals that the |0> spin component of the triplet exciton plays the most important role. The temperature dependence of the phosphorescence at the low temperature range is also studied.
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  • Luminescence from Ferroelectric Methylammonium Chrome Alum
    Makoto Morita, Kazuyuki Murata
    1975 Volume 38 Issue 4 Pages 1048-1055
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1048
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    The luminescence spectra of methylammonium chrome alum, CH3NH3Cr(SO4)2 12H2O (MCrSD), are measured from 4.2 K to 200 K in order to clarify spectroscopic behaviour of Cr3+ ions in the host ferroelectric crystal. The substantial spectral anomalies of the R1 line and vibronic bands are observed in the region 15,000∼13,000 cm−1 at around the Curie point (164 K). In particular, the linewidth of the R1 line reveals a characteristic broadening which is not simply described in terms of the Raman scattering process. The linewidth analysis gives strong evidence for fluctuation of spontaneous polarization in a relaxation process of Debye type. At around 35 K, the R1 line shows a unusual intensity maximum. These results could be ascribed to a change of the strength of the hydrogen-bonding, associated with a sulphate-group disorder at low temperatures.
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  • Composition Dependence of the Phase Transition Temperatures in the Mixed Crystal Systems near SrTiO3
    Shinsuke Miura, Masakazu Marutake, Hiromi Unoki, Hiromoto Uwe, Tunetar ...
    1975 Volume 38 Issue 4 Pages 1056-1060
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1056
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    Elastic measurement has been done for single crystals of Sr1−xBaxTiO3 (x=0, 0.006, 0.012, 0.014) and Sr0.941Ca0.059TiO3 in the temperature range from 4 K to 240 K. The structural phase transition temperature Ta, where elastic anomaly occurred, was found to decrease with Ba-concentration, while it increased with Ca-concentration. Dielectric constants for the Sr1−xBaxTiO3 system have also been measured with stress-treated crystals.
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  • Theory of ESR Line Width in n-Type InSb
    Ko Sugihara
    1975 Volume 38 Issue 4 Pages 1061-1066
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1061
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    Anisotropic spin-dependent energy δ0(E)σ·\hatκ(\hatκ∼O(k3), σ: Pauli matrix), introduced by Rashba and Sheka in their study of the combined resonance in III–V compounds, provides a broadening of the Zeeman level. However, the level broadening is extremely narrowed by frequent scattering of the conduction electrons induced by ionized impurity centers. The present mechanism, together with the spin-flip processes related to the ionized impurity scattering and the LO-phonon exchange, gives a qualitative explanation for the observed ESR line width of the degenerate samples in n-InSb.
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  • Optical Absorption and Luminescence of NaCl–NaBr Solid Solutions
    Hideyuki Nakagawa, Koichi Toyoda, Yoshio Nakai
    1975 Volume 38 Issue 4 Pages 1067-1072
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1067
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    The optical absorption and luminescence of NaCl–NaBr solid solutions were studied in the whole concentration range at liquid nitrogen temperature. The change of the profile observed in the absorption spectra around 0.2 mole fraction of NaBr content is attributed to the percolation of minority composition in this system. With increasing the concentration of NaBr, the 5.15 eV emission band, which is known to arise from Br−-dimers, shifts gradually toward the low energy side to reach finally the location of the intrinsic emission band in pure NaBr, whereas the 4.0 eV emission band arising from Br−-monomers diminishes its intensity and fades out above 0.2 mole fraction of NaBr. This suggests that the relaxed excited state of the Br−-dimer, not of the Br−-monomer, in NaCl can be recognized as a proto-type of the self-trapped exciton in the pure NaBr.
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  • Phonon Viscosity and Dislocation Drag in SrTiO3
    S.K. Kor, N.D. Tripathi
    1975 Volume 38 Issue 4 Pages 1073-1075
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1073
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    Second-and third-order elastic constant data have been used to evaluate the acoustic mode Grüneisen parameter ⟨γ⟩, average Grüneisen constant ⟨γ2⟩, non-linearity constant D for Strontium titanate (SrTiO3). The attenuation suffered by longitudinal and shear acoustic-wave propagating along ⟨100⟩ and ⟨110⟩ directions and shear waves polarized along ⟨100⟩ and ⟨10\bar1⟩ directions, due to phonon-viscosity and theermoelastic mechanism have been calculated for SrTiO3 at 295 K. The phonon viscosity in terms of dislocation drag coefficient along ⟨100⟩ and ⟨110⟩ directions is also evaluated.
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  • Note on the Phase Transition in CuI
    Takeo Matsubara
    1975 Volume 38 Issue 4 Pages 1076-1079
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1076
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    The α-β-γ transitions observed in CuI are interpreted in terms of anharmonic oscillation of Cu ion. Strong temperature dependence of the Debye-Waller factor and large anomalous entropy are correlated consistently within the proposed anharmonic oscillator model.
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  • The Second Grüneisen Constant of Some Cubic and Uniaxial Solids
    R. Ramji Rao
    1975 Volume 38 Issue 4 Pages 1080-1082
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1080
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    The second Grüneisen constant of a number of cubic and uniaxial solids has been evaluated at the room temperature from thermodynamic data using a modified formulation of Basset et al. A method to calculate the Anderson-Grüneisen parameter of a solid from its pressure derivatives data is described.
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  • 23Na Nuclear Spin-Lattice Relaxation in AgNa(NO2)2 Crystal
    Tomoyuki Hikita, Itaru Tatsuzaki
    1975 Volume 38 Issue 4 Pages 1083-1089
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1083
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    The nuclear spin-lattice relaxation time of 23Na in a single crystal of silver sodium dinitrite has been measured as a function of temperature. The inverse of the relaxation time monotonically increases with temperature. The anomalous decrease of the relaxation time near the phase transition temperature as observed in sodium nitrite was not found in this ferroelectric. The temperature dependence of the relaxation time was interpreted as a result of EFG fluctuation at the 23Na site caused by the flipping of the two nearest NO2− ions. The flipping frequency of the NO2− ion was evaluated to be lower than the Larmor frequency.
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  • Variation of Electron Microscopic Thickness Fringes of Aluminium Single Crystals with Energy Loss
    Shigeya Kuwabara, Tateki Uefuji
    1975 Volume 38 Issue 4 Pages 1090-1097
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1090
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    From the observation of energy-filtered thickness fringes in electron microscopic bright-field and dark-field images of thin aluminium single crystal films it is found that (1) the fringe positions and distances are almost the same regardless of the filter potential, and (2) the fringe intensities of no-loss, 7 and 15 eV loss electrons decrease slowly as the thickness increases but those of 3 and 10 eV loss electrons decrease rapidly. These effects are explained by using a n-slice dynamical theory in which the effect of energy losses is taken into account.
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  • Proton Magnetic Shielding in the Water Molecule under the Electric Field —Semi-Empirical Calculation of the Proton NMR Shift—
    Akira Takahashi
    1975 Volume 38 Issue 4 Pages 1098-1105
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1098
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    The two electron wave function of an OH bond of the water molecule is approximated by a linear combination of the covalent and the ionic type wave functions. The mixing coefficient λ in the gaseous state is determined from the observed dipole moment of the molecule. The proton shift relative to the gaseous state is calculated as a function of λ by a variational method. The values of λ for the water molecules, co-ordinated to Al+++ in the AlCl3 aqueous solution or to Mg++ in the crystal of MgCl2·6H2O, are empirically determined from the observed shifts. From these values of λ, and the known values of the component of electric field, F⁄⁄, along the OH bond of the coordinated water molecule, the bond polarizability is estimated. The assumption of constancy for the value of polarizability leads to the result that the shift depends almost linearly on F⁄⁄.
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  • Laser Stark Spectroscopy of CH3Cl35 ν6 Band
    Fujio Shimizu
    1975 Volume 38 Issue 4 Pages 1106-1109
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1106
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    Methylchrolide ν6 band was studied by laser Stark spectroscopy using 10 μm CO2 lasers. Resonances of approximately 100 transitions of CH3Cl35 ν6 band were identified. Band constants of ν6 band were calculated.
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  • On the Models for Phytochrome Chromophore. II
    Hideo Suzuki, Tohru Sugimoto, Ken Ishikawa
    1975 Volume 38 Issue 4 Pages 1110-1118
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1110
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    On the model for phytochrome chromophore proposed by Crespi et al., the light-absorbing property is examined using the ZDO approximation of the LCAO-ASMO-SCF-CI theory of π-electrons. All the bond lengths together with the bond angles of the pyrrole rings with cyclic π-system are improved in each stage of the iteration processes for solving MO’s, and a sufficient number of configurations are included in the CI calculation.
    The interactions of the model chromophore with a negative point-charge and with a point-dipole are also examined on the basis of the stationary perturbation theory for degenerate states, and it is shown that, among the models so far proposed, only the Pfr-form by Crespi et al. can reproduce the observed absorption spectra of phytochrome, provided its interaction with the electric field caused by protein moiety is taken into account.
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  • Positive Charge Carriers in Liquid Helium II Produced by a Hot Filament
    Hidenobu Hori, Kazuharu Toyokawa, Osamu Wakishima, Muneyuki Date
    1975 Volume 38 Issue 4 Pages 1119-1124
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1119
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    A new method of producing high density positive charge carriers in liquid He II was developed by using an immersed hot tungsten filament.The production mechanism and transport properties of the positive carriers were investigated both experimentally and theoretically. It was found that when the applied voltage is reversed in the hot cathode diode an electrical discharge occurs in the gas sheath around the filament and the positive ions are emitted from the discharge plasma into surrounding liquid He II. The estimated carrier density is about 1010 carriers/cc.
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  • Convective Instability of the Bernstein Wave Propagating Obliquely to the Magnetic Field in a Beam-Plasma System
    Toshitaka Idehara, Mitsuyoshi Takeda, Yoshio Ishida
    1975 Volume 38 Issue 4 Pages 1125-1132
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1125
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    The Bernstein wave propagating obliquely to the magnetic field is excited by the coaxial probe and is heavily damped by the Landau and/or cyclotron damping with respect to the direction along the field, whose propagation direction may be coincident with that of the maximum value of group velocity (∂ω⁄∂k). When a rather weak electron beam is injected, the wave is amplified due to the convective instability, whose wave vector k is determined as follows: the wave number component k|| paralell to the field satisfies the Cherenkov excitation condition (k||vb≈ω), and then, the component k⊥ perpendicular to the field is determined by the dispersion relation K(ω, k||, k⊥)=0. Increasing the intensity of the electron beam above the threshold value, the spontaneous excitation of the wave is observed, which can be explained consistently as the result of the convective instability of thermal noise in plasma.
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  • Computer Simulation for the Parametric Instabilities in Plasmas
    Tatsuki Ogino, Susumu Takeda
    1975 Volume 38 Issue 4 Pages 1133-1140
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1133
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    A computer simulation is performed to study two types of the parametric instabilities and their saturation states using a fluid model where the fluid transform and Poisson’s equations are computed by the modified 2 step Lax-Wendroff method.
    From the simulation, it is clearly confirmed that the decay instability is excited when the pumping dipole field frequency ω0 is higher than the plasma cut-off frequency ωp0, and that the oscillating two stream instability is excited when ω0 is lower than ωp0. The resonance conditions for the frequency and wave number are well satisfied, and the simulated growth rate agrees well with the theoretical one. Both the instabilities saturate due to the mode-mode coupling when the wave energy approaches the electron kinetic energy.
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  • Instability and Breaking up of a Bulk of Gas with a High Relative Velocity to a Surrounding Liquid
    Keishiro Niu, Takashi Yabe, Motoo Hori
    1975 Volume 38 Issue 4 Pages 1141-1146
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1141
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    An analysis is given of the instability and breaking up of a gas string or a gas board which has a high relative velocity to a surrounding liquid. This situation is chosen as a theoretical model for representing the gas motion in an experiment which is devised to supply a lot of small gas bubbles in a liquid. The governing equations and the boundary conditions for the gas and liquid motions in linearized forms lead us to a dispersion relation between the growth rate of wave and the wave number. The wave length which gives the maximum growth rate coincides with the average diameter of bubbles observed in the experiment.
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  • Non-Linear Waves on an Interface between Two Superposed Fluids
    Isamu Nakata
    1975 Volume 38 Issue 4 Pages 1147-1154
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1147
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    Weakly non-linear waves on a plane interface between an inviscid and incompressible liquid layer with uniform thickness and a semi-infinite gas with negligible density in an acceleration field normal to the undisturbed plane interface and directed from the liquid to the gas are investigated in the presence of surface tension. The other surface of the liquid layer is assumed being adjacent to a rigid boundary. By means of the derivative expansion method, a non-linear Schrödinger equation for the complex amplitude of a quasi-monochromatic travelling wave is derived. From the known property of this equation, it is found that wave trains of constant amplitude are modulationally unstable. This suggests a new possibility of the instability of the interface. Applying the same method to the state near the marginal stability, the non-linear cut-off wavenumber is obtained irrespectively of an initial condition.
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  • Remarks on the Relationship between Mean-Speed and Concentration in Traffic Flow
    Kinzo Hida
    1975 Volume 38 Issue 4 Pages 1155-1158
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1155
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    On the basis of Prigogine’s kinetic theory on a traffic flow, a unique relation between the mean speed and the concentration is proposed. In case of low density traffic, the flow (defined by the concentration times the mean speed) versus the concentration is shown by a family of one-parameter curves, which terminates on the critical curve corresponding to a high density traffic. Some remarks are also given to the logarithmic law by Greenberg.
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  • Interaction of Two Vortex Rings Moving along a Common Axis of Symmetry
    Yuko Oshima, Tsutomu Kambe, Saburo Asaka
    1975 Volume 38 Issue 4 Pages 1159-1166
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1159
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    Interaction of two vortex rings is examined by experiments and numerical analysis. Experimental observations are carried out in a water tank using the electrolysis method and it is found that the interaction patterns are classified into three types. Numerical simulations are performed by integrating the Navier-Stokes equation and the results of the experiments and calculations are found in good agreement. The game of the passing through each other does not happen in this region of low Reynolds number.
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  • Interaction of Plane Nonlinear Waves in a Compressible Fluid and Two-Dimensional Shock Turbulence
    Hiroshi Tokunaga, Tomomasa Tatsumi
    1975 Volume 38 Issue 4 Pages 1167-1179
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1167
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    Interaction of two intersecting plane nonlinear waves in a compressible fluid such as shocks, expansion waves, slip flows and contact surfaces are investigated using the reductive perturbation method. It is shown that intersections of waves belonging to different families of characteristics do not alter the nature of the waves but change their amplitudes, phase-velocities and paths, whereas intersections of waves belonging to the same family of characteristics make them either coalesce or absorb each other. It is inferred from these results that the statistical properties of two-dimensional shock turbulence is identical to those of the Burgers turbulence.
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  • Secondary Flow around a Circular Cylinder in Rotatory Oscillation
    Sinzi Kuwabara, Ryuji Takaki
    1975 Volume 38 Issue 4 Pages 1180-1186
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1180
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    Possibility of occurrence of secondary flow in boundary layer around a circular cylinder in rotatory oscillation is studied by means of linear theory. The secondary flow can occur above a certain critical Reynolds number, and the condition of occurrence of the secondary flow is shown by curves in the Reynolds and wave number diagrams with a nondimensional thickness of the boundary layer as a parameter. Satisfactory agreement of the results with experimental ones by Taneda et al. is obtained.
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  • Stokes Solutions for Flow Near Corners in Three-Dimensions
    Naoyuki Tokuda
    1975 Volume 38 Issue 4 Pages 1187-1194
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1187
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    Nature of three dimensional viscous flow near corner formed by the intersection of two quarter-infinite flat plates at various angles has been examined by constructing Stokes slow flow solutions. Specifically viscous flows for intersection angles of π, (3/2)π and 2π have been investigated, which correspond to flows past a semi-infinite flat plate, an external flow past a right angle corner and a quarter-infinite flat plate respectively.
    On the basis of the Stokes solutions obtained, various types of singularities arising in the flow field are identified over the complete range of intersection angle 0–2π.
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  • Flow of Viscous Fluid through Regularly-Spaced Cylinders
    Mitutosi Kawaguti
    1975 Volume 38 Issue 4 Pages 1195-1199
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1195
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    Relating to sheet flow theory for microcirculation in lung, two model flows are studied by numerical method. The flow of a viscous fluid through regularly-spaced cylinders is studied by solving numerically the Navier-Stokes equations. Further, the flow of a viscous fluid between two parallel plates interconnected by regularly-spaced cylinders is studied using Hele-Shaw method. The former flow corresponds to the case where the gap between membranes is wide and the effects can be completely neglected. The latter flow corresponds to the case where the gap between membranes is narrower than the spacing of the cylinders.
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  • Derivative-Expansion Method for Nonlinear Waves on a Liquid Layer of Slowly Varying Depth
    Takuji Kawahara
    1975 Volume 38 Issue 4 Pages 1200-1206
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1200
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    An extended form of the derivative-expansion method is applied to the study of nonlinear capillary-gravity waves on a liquid layer of slowly varying depth. Generalized expressions of the nonlinear Schrödinger and the Korteweg-de Vries equations including inhomogeneity effects are derived. The results are discussed briefly in connection with those obtained by Whitham’s technique. It is pointed out that the method is widely applicable to the analysis of asymptotic behaviour of the nonlinear dispersive waves in weakly inhomogeneous media.
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  • Evidence Against the Presence of the 69.0, 70.3, 80.1 and 83.2 keV Gamma Rays in the Decay of 106mAg
    B. Singh, H. W. Taylor
    1975 Volume 38 Issue 4 Pages 1207
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1207
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  • Sound Propagation near a Plait Point in Some Ternary Critical Mixtures
    Kazu Nishigaki
    1975 Volume 38 Issue 4 Pages 1208
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1208
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  • An Anomalous Critical Dispersion in a Canted Antiferromagnet, Ni(IO3)22H2O
    Yuichi Okuda, Motohiro Matsuura, Taiichiro Haseda
    1975 Volume 38 Issue 4 Pages 1209
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1209
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  • Upper Critical Field in Superconductor Containing Magnetic Impurities
    Jun Takeuchi, Toshio Aoi, Yoshika Masuda
    1975 Volume 38 Issue 4 Pages 1210
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1210
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  • Effects of Hydrostatic Pressure on the Curie Temperature of Ni–Pt Alloys
    Hideoki Kadomatsu, Hiroshi Fujiwara, Kazuo Ohishi, Yoshiaki Yamamoto
    1975 Volume 38 Issue 4 Pages 1211
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1211
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  • One-Dimensional Behavior in the Spin Dynamics of [(CH3)3NH]MnCl32H2O
    Katsunori Iio, Mitsumasa Isobe, Kazukiyo Nagata
    1975 Volume 38 Issue 4 Pages 1212
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1212
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  • Thermal Expansion of (Fe1−xMnx)3C
    Toshihiko Shigematsu, Shin-ichiro Ohmori, Norihiko Nakanishi, Sukeji K ...
    1975 Volume 38 Issue 4 Pages 1213
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1213
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  • ESR Free Decay Signals in Ruby Produced by Ultrashort Light Pulses
    Yoshihiro Takagi, Yukio Fukuda, Meiro Chiba, Koichi Yamada, Tsuneo Has ...
    1975 Volume 38 Issue 4 Pages 1214
    Published: April 15, 1975
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1214
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  • The Critical Temperature of Superconducting Sn–Ge Layered Systems
    Natsuki Mori, Masayuki Hosono, Hajime Ozaki
    1975 Volume 38 Issue 4 Pages 1215
    Published: April 15, 1975
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.38.1215
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