Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Search
Advanced search
OR
Browse
Search
Volume 35, Issue 6
Displaying 1-46 of 46 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Polarization Measurement of Coherent Bremsstrahlung from a Single Crystal of Silicon. I
    Masaaki Kobayashi, Shigenori Hiramatsu, Kunitaka Kondo, Shin-ichi Kuro ...
    1973 Volume 35 Issue 6 Pages 1569-1578
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1569
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The linear polarization of coherent bremsstrahlung was measured by comparing one dimensionally projected angular distribution of symmetricpair electrons with the theory. The distribution was measured with a wire chamber on both the electron and positron sides independently of each other. polarizations obtained on both sides agreed well.
    The polarization was measured at 153 MeV for various orientations of the crystal. The polarization spectrum was in good agreement with the theory. A large polarization at the null injection angle of the incident electron beam to the crystal axis [110] is discussed in relation to a partial failure of the Born approximation and to the crystal dislocation.
    The systematic error for the polarization, temperature rise of the crystal, problems in the measuring method, etc. are discussed.
    View full abstract
    Download PDF (1388K)
  • The 1 g9⁄2 Neutron State in Nuclei with Neutron Numbers between 52 and 82
    Toshiyuki Ishimatsu, Shogo Hayashibe, Takashi Awaya, Haruko Ohmura
    1973 Volume 35 Issue 6 Pages 1579-1585
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1579
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Spectra of deuterons from (p, d) reactions on 18 nuclei with neutron numbers N between 52 and 82 were measured at an angle of 20° with 52-MeV incident protons. In each spectrum a broad bump with the distinct top is observed at excitation energies of several MeV or higher. From the systematic behavior of the bump it is inferred that the top of the bump stands for an approximate position of the 1 g9⁄2 neutron state, and energies of this state are estimated from the observed spectra. The estimated energies are compared with calculated ones and a reasonable agreement is obtained. The systematics of the energy difference between the top of the bump and the ground state in the residual nucleus is discussed on the basis of the simple pairing theory, and the results which are well consistent with the above inference about the top of the bump are obtained.
    View full abstract
    Download PDF (928K)
  • Theory of a Disordered Heisenberg Model by the Coherent Potential Approximation
    Takehiko Oguchi, Ikuo Ono, Takuma Ishikawa
    1973 Volume 35 Issue 6 Pages 1586-1592
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1586
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The averaged magnon Green function in a random Heisenberg ferromagnet which has two kinds of exchange integrals JA and JB randomly distributed is calculated by the coherent potential approximation. The density of states of magnon is calculated for various cases, and the correct localized mode is obtained in the low concentration limit. The critical concentration is obtained for two cases, JA>0, JB<0 and JA>0, JB=0. The magnetic properties for the two cases at the critical concentration are different from each other.
    View full abstract
    Download PDF (848K)
  • Ising Ferromagnets with Random Impurities
    Noboru Matsudaira
    1973 Volume 35 Issue 6 Pages 1593-1599
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1593
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The Ising of spin 1/2 with the nearest-neighbor interaction, in which nonmagnetic impurity atoms are dissolved, is investigated. Based on the identity ⟨si⟩=⟨tanh(KΣsj)⟩, decoupling approximation is introduced for treating the many-spin correlation functions. The dependences of the critical temperature and of the spontaneous magnetization on the impurity concentration are calculated for two- and three-dimensional lattices. The results for the critical temperature and the critical concentration are better than the results of the results of the extended molecular-field approximations of Mamada and Takano, or of Oguchi and Obokata. Especially for the three-dimensional lattices the critical obtained agrees with that of Sykes and Essam, estimated from the series expansion.
    View full abstract
    Download PDF (716K)
  • The Band Structure of CdSb
    Yoshinori Yamada
    1973 Volume 35 Issue 6 Pages 1600-1607
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1600
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The band structure of crystalline CdSb has been calculated by the use of empirical-pseudopotential method in the single space group representation. Calculated band structures shown that both the bottom of the conduction band and the top of the valence band are on the symmetry line [100]. It is found that the lowest energy gap of 0.49 eV is indirect one from ∑4 to ∑1 on this line. Direct transition gaps are assigned by using the selection rules. The anisotropy of the effective mass at the top of the valence band is such that (mh*)a:(mh*)b:(mh*)c=1.60:3.35:1.00 and is in good agreement with the determined from the experimental from the experimental results of the Hall mobilities.
    View full abstract
    Download PDF (988K)
  • Observation of Spin Densities on Antibonding Orbitals in K2CuF4 by Neutron Diffuse Scattering
    Kinshiro Hirakawa, Hironobu Ikeda
    1973 Volume 35 Issue 6 Pages 1608-1615
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1608
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Direct observation of the spin densities on the F−–Cu2+–F− antibonding orbital in ferromagnetic K2CuF4 was made by neutron paramagnetic diffuse scattering. The covalency effect appeared as an anomalous modification of the form factor of the Cu2+ ions as suggested early by Hubbard and Marshall. The form factor at small angles was worked out precisely by the use of the intense critical scattering in the form of ridge reflecting the two-dimensional nature of this compound. As expected, a well behaved small peak appeared at lower scattering angles less than sinθ⁄λ∼0.1. The height of this peak as well as the flatness of the form factor at higher scattering angles were consistent to the NMR data and the theory.
    View full abstract
    Download PDF (960K)
  • Magnetic Critical Scattering from an Itinerant Antiferromagnet of γFe0.5Mn0.5 Alloy I. Quasi Elastic Scattering
    Yoshikazu Ishikawa, Yasuo Endoh, Susumu Ikeda
    1973 Volume 35 Issue 6 Pages 1616-1626
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1616
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The magnetic critical scattering from a single crystal of γ-Fe0.537Mn0.463 has been studied around the (001) and (110) reciprocal lattice points. It has been found that the longitudinal spin correlation becomes divergent at the Néel temperature TN of 479.0±1.5 K, the parallel staggered susceptibility χ⁄⁄(Q) obeys a power law of α(T−TN)−1.35±0.05, in contrast with the temperature independent static susceptibility. The transverse spin correlation, however, remains finite at TN with the inverse correlation length of about 0.038 Å−1. The anisotropy of the spin correlation has been suggested not due to the crystal anisotropy, but to either the anisotropic exchange interaction or the anisotropy of the non-interacting spin susceptibility of d bands. The anisotropy of the scattering profile with respect to the wave vector around the reciprocal lattice points has been found much smaller than that expected for the type I antiferromagnet with the short range interactions.
    View full abstract
    Download PDF (1452K)
  • On the Magnetically Dilute Ferromagnetic System
    Toshihiro Idogaki, Norikiyo Uryû
    1973 Volume 35 Issue 6 Pages 1627-1634
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1627
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The problems on the magnetic dilution in the ferromagnetic system are discussed by the use of the Ising model of spin 1/2. In addition to the exchange interaction between nearest neighbors, the next nearest neighbor (n.n.n.) interaction has been taken into consideration, and the magnetic properties are calculated by the method of concentration expansion. Particularly the critical concentration and the concentration dependence of the Curie temperature have been calculated for several lattice structures. In some crystal lattices, the n.n.n. interaction concerns to the change of the dimensionality of the magnetic lattice and then the effects of the n.n.n. interaction are quite remarkable in the concentration dependence. The numerical values of the critical concentration and the Curie temperature calculated in the present method are compared with the results previously calculated by various methods and good agreement is obtained.
    View full abstract
    Download PDF (968K)
  • Spin Wave Resonance and Exchange Parameters in fcc Fe–Ni Alloys
    Toshio Maeda, Hiroshi Yamauchi, Hiroshi Watanabe
    1973 Volume 35 Issue 6 Pages 1635-1642
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1635
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Spin wave resonance for a series of fcc Fe–Ni alloys has been measured in order to study the exchange stiffness constant D. In general the resonance field vs the square of the spin wave mode number (n) curve is linear for high values of n, whereas some amount of deviation from linearity occurs for low values of n. This is considered to be due to the inhomogeneous demagnetizing field of the sample. We can determine the value of D from the linear part of the curve, provided we have a sufficient number of observed modes. As a supplementary means, we have also made low temperature magnetization measurements from which the value of D was derived. Consistency between these two kinds of measurements is ascertained. The composition dependence of D is not quite coincident with that derived from the neutron small angle scattering experiments by Hatherly et al. The data are discussed both from the standpoint of localized electron model and collective electron model.
    View full abstract
    Download PDF (936K)
  • Electron Spin Resonance of Cu2+ Doped in TGS
    Terumasa Kato, Ryuji Abe
    1973 Volume 35 Issue 6 Pages 1643-1648
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1643
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The ESR spectra of Cu2+ doped in TGS were analyzed without any assumption in the symmetry of the crystal field. At room temperature, the directions of the maximum principal values of the A- and g-tensors agreed within 4° with the normal to the plane containing the two glycines, glycine 2 and glycine 3. The directions of gx and gy were nearly parallel to the bisector lines between N–N and O–O. At 77 K, two kinds of the absorption lines, the spectrum I and spectrum II, were observed. The former was decreased while the latter increased in intensity with increasing temperature. The parameters p, a12 and κ in the ligand field were determined using the principal values of the g- and A-tensors. The p-values for the spectrum I and spectrum II were 0.036 cm−1 and 0.0776 cm−1, respectively. This change of the p-value indicates that the electron cloud in Cu2+ ion contracts with the increase of rotation frequency of the protons in NH3.
    View full abstract
    Download PDF (620K)
  • On the Pressure Dependence of Electrical Conductivity of Graphite
    Kiyoshi Noto, Takuro Tsuzuku
    1973 Volume 35 Issue 6 Pages 1649-1653
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1649
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Electrical conductivity (σ) of pyrolytic graphite along the basal plane was measured at room temperature in the presence of hydrostatic pressures (p) up to 20 kb. the pressure dependence coefficient d ln σ⁄dp evaluated was only order of 10−3/kb, despite compressive stresses gave rise to a suppression of lattice vibrations, and also to an increase of the carrier concentration (N) with a rate of d ln N⁄dp\gtrsim10−2/kb. Such a discrepancy has successfully been removed by taking into account the pressure-induced change of the effective mass of carriers, which functions so as to cancel the increment of σ due to the increase of N. Calculations were performed on the basis of an effective mass approximation for the Slonczewski-Weiss band model. Thus, the participation of carrier-carrier scattering proposed by Yeoman and Young is excluded from responsible mechanisms. Discussions given of the c-axis conductivity on the same basis have also yielded a success in accounting for the pressure dependence.
    View full abstract
    Download PDF (624K)
  • Formation Process of Martensite in AgCd
    Akira Nagasawa
    1973 Volume 35 Issue 6 Pages 1654-1659
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1654
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The present paper gives the results of direct observations on the formation process of the 9R martensite in AgCd. A direct process of the β′ to 9R transition is not realized but the transition is the β″ to 9R type. The β″ phase, formed from the β′ one before the martensitic transition, is not any precipitate in the β′ one. The martensite is produced as result of an enhanced fluctuation of the β″ phase: The fluctuation seems to be due to softening of a particular phonon mode. Based on the consideration on the phonon mode to be softened, nature of the martensitic transition in AgCd is discussed. The exact structure of the martensite is also determined. In addition, a common mode of the martensitic transition in the other β-brass type alloys is briefly suggested.
    View full abstract
    Download PDF (1180K)
  • A Comparison between the Anisotropy of the Counting Rate of the Collinear Annihilation-Photon Paris and the Topology of the Fermi Surface in Cu
    Takashi Akahane, Kunio Fujiwara
    1973 Volume 35 Issue 6 Pages 1660-1663
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1660
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The result of a rotating-specimen measurement of the angular correlation of annihilation radiation in Cu in the collinear geometry has been compared with the topology of the Fermi surface with evaluating the umklapp effect on the electron wave function in pseudo-plane-wave scheme. The agreement is fairly good within a few per cent of the mean counting rate. A significant increase in the height of the ⟨111⟩-peak is, however, observed in the experimental curve, which suggests a higher mean annihilation rate of the neck electrons than that of the other ones.
    View full abstract
    Download PDF (496K)
  • A Lattice Effect on the Enhancement of the Partial Annihilation Rate Inferred from a Numerical Computation on a Nonspherical Fermi Surface
    Kunio Fujiwara, Toshio Hyodo
    1973 Volume 35 Issue 6 Pages 1664-1667
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1664
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The first-order approximation to the partial annihilation rate in a hypothetical monovalent metal having a nonspherical Fermi surface has been evaluated numerically by utilizing a many-body theory associated with the two nearly-free-electron bands. The nonsphericity was introduced by a pair of zone faces to which the Fermi surface is attracted to from pair of short necks. The rotational symmetry around the reciprocal-lattice vectors relevant to those zone faces was also assumed.
    The result gives higher enhancement of the partial annihilation rates of the neck electrons than that of the other ones. A careful examination of the present computation shows that the higher enhancement is attributable to the smaller gradients of the change in energy near the necks. Similar effects may be found also in more general cases.
    View full abstract
    Download PDF (488K)
  • Magnetic Field Effect on the Hypersonic Attenuation by Shallow Donors in Ge
    Tatsuro Miyasato, Fumio Akao, Masakazu Ishiguro
    1973 Volume 35 Issue 6 Pages 1668-1674
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1668
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The magnetic field effect on the hypersonic attenuation in Sb-doped Ge has been measured over the range from 0 to 200 kG at liquid He temperatures. The attenuation was observed to decrease as the magnetic field was increased at high field. The magnetic field dependence of the attenuation in the case of 1×1015/cm3 doped specimen differs from that of 1×1016/cm3 doped specimen. The experimental results are not quantitatively explained by the theoretical treatment which takes into consideration only the Zeeman effect on the single and the triplet states. If it is assumed that the effective Bohr radius of the donor electron is larger than the known values by other experimental methods, the semiquantitative agreement is obtained by calculating the shrinkage effect of the donor wave function.
    View full abstract
    Download PDF (928K)
  • Nuclear Magnetic Resonance Study on 23Na in Gamma-Ray
    Toshirou Yagi, Itaru Tatsuzaki
    1973 Volume 35 Issue 6 Pages 1675-1679
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1675
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The principal components of an electric field gradient tensor at a site of 23Na nucleus in NaNO2 irradiated with γ-ray have been studied under the precise temperature control. temperatures at which the asymmetric parameter η of the EFG tensor indicates anomalies decrease with the γ-ray irradiation. Especially, the temperature at which η becomes zero decreases monotonically with increase of the irradiation dose and this result does not seem to contradict an interpretation that the ferroelectric phase changes to the ferroelectric-sinusoidal phase at the temperature. The relation between the EFG tensor and long range order parameter is also confirmed.
    View full abstract
    Download PDF (644K)
  • Studies on Ag− Centers in Alkali Halides. IV. Characteristic Features of Ag− Centers
    Shigetaka Shimanuki
    1973 Volume 35 Issue 6 Pages 1680-1687
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1680
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The absorption, emission and its excitation spectra of Ag− centers in NaCl, NaBr and RbCl crystals were investigated at various temperatures. Most of the properties of these centers were found to be qualitatively similar to those of potassium halides, except that NaBr does not show C emission. The third moment of the C band shape function was obtained as a function of temperature for KCl and RbCl, and was compared favorably with the Nasu-kojima theory. It is concluded that the linear electron-lattice coupling approximation is quite satisfactory for Ag− centers in various substances so far studied.
    View full abstract
    Download PDF (956K)
  • Magnetoabsorption of Indirect Exciton in AgCl and AgBr
    Mitsugu Matsushita
    1973 Volume 35 Issue 6 Pages 1688-1693
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1688
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Magnetoabsorption of indirect exciton has been studied in AgCl and AgBr at 4.2 K. A new absorption appears on the lower energy side of the zerofield absorption edge when a magnetic field is applied. Kinks are observed in this absorption curve in a high magnetic field. Their dependences on the magnetic field are analysed by taking an electron-hole exchange interaction into consideration. It is concluded that the new absorption is due to a triplet exciton, and the highest tops of the valence bands in both AgCl and AgBr are at the L-point in the Brillouin zone, their states being (L4−, L5−). Exchange energy Δ and effective g-values are estimated as Δ=0.79 meV, gc=1.9, g⁄⁄v=0.7 and Δ=0.33 meV, gc=2.5, g⁄⁄v=0.5 for AgCl and AgBr, respectively.
    View full abstract
    Download PDF (768K)
  • Switching Transients in Rochelle Salt
    Gyoichi Nogami, Masahide Imasaki
    1973 Volume 35 Issue 6 Pages 1694-1698
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1694
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The switching transients in Rochelle salt were investigated by the pulse method. Through the analysis of the experimental results, calculations were made for switching pulse and for the well velocity. The shape of the switching pulse at low field can be explained by the one dimensional growth of domains after the nucleation of new sites at an earlier time of switching. The sideways well velocity can be described by an exponential law of the type, v=v∞exp(−δ⁄E). The wall velocity was about 0.1 cm/sec for about 150 v/cm at 13°C, which was the same order of that obtained by the optical measurement.
    View full abstract
    Download PDF (620K)
  • ESR Investigation of TGS Doped with Cr3+ Ions
    Katsuyuki Nishimura, Takasu Hashimoto
    1973 Volume 35 Issue 6 Pages 1699-1703
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1699
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    We observed the ESR signal of Cr3+ ions in triglycine-sulphate. It is found that a pair of lines gradually approach to each other with increasing temperature in the ferroelectric phase and converge at the Curie temperature. The results are interpreted by using the concept of motional narrowing on the basis of the model of order-disorder type. The linewidth for the applied magnetic field nearly parallel to the principal axis z shows an anomalous increase near the Curie temperature. The critical exponent of the linewidth in the ferroelectric region is determined to be 0.5 in the vicinity of the Curie temperature and to be 2.0 far from the Curie temperature.
    View full abstract
    Download PDF (616K)
  • Group-Theoretical Interpretation of Faintness Index for Ferroelectricicty or Ferroelasticity. I. Faintness Index of Soft Vibrational Modes
    Kêitsiro Aizu
    1973 Volume 35 Issue 6 Pages 1704-1707
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1704
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    What has been called the faintness index of a degenerate set of soft vibrational modes with respect to a component y of electric polarization vector of mechanical strain tensor is group-theoretically interpreted as the smallest of the permissible values of such integer N that the symmetrized Kronecker Nth power of the irreducible representation of G for the soft modes may contain as an irreducible component the representation of G for y, where G is the space group of the prototypic phase. If there is no such N, the faintness index is defined as equal to infinity. A few examples are presented and discussed.
    View full abstract
    Download PDF (464K)
  • X-Ray Kβ Emission Spectra of Metallic Manganese, MnO, MnP and α-MnS
    Hiroo Nakamori, Chikara Sugiura, Kenjiro Tsutsumi
    1973 Volume 35 Issue 6 Pages 1708-1710
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1708
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    X-ray Mn Kβ emission spectra of metallic manganese, MnO, MnP and α-MnS are obtained by fluorescent excitation method. A two-crystal spectrometer is used in the (1, 1) position. The Mn Kβ emission spectrum consists of a diagram line Kβ1,3, a valence band Kβ5, a non-diagram line Kβ′, etc. The general features of the Mn Kβ spectra of metallic manganese and MnP resemble each other and those of MnO and α-MnS are alike. According to Tsutsumi the origin of the Kβ′ line is derived from the exchange interaction between the electrons of the incomplete 3d shell of 3d elements and the hole of the 3p shell owing to the emission of the Kβ1,3 line, and thus some correlation is expected between the features of the Kβ′ line and the Kβ5 band. Results show the correlation between them and also support the fact that MnP has metallic character.
    View full abstract
    Download PDF (356K)
  • Determination of Dynamical Matrix by Means of X-Ray Thermal Diffuse Scattering
    Yasuji Kashiwase, Jimpei Harada
    1973 Volume 35 Issue 6 Pages 1711-1722
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1711
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    A method of dynamical matrix determination by means of the thermal diffuse scattering of X-rays is presented. Born’s theory (Proc. Roy. Soc. A180 (1942) 397) is improved by including the correction terms due to the harmonic multiphonon and anharmonic scatterings. It is required to approach the self-consistent scattering matrix and dynamical matrix which appear in the intensity equations for the one-phonon, multiphonon and anharmonic scatterings by the successive approximation. It is shown that an application of this method is possible for sodium chloride crystal if the intensity measurement of thermal diffuse scattering is made accurately at 100 K.
    View full abstract
    Download PDF (1448K)
  • On a Stability of a Q-Switched Laser Pulse Form
    Yoshio Nishiyama, Koji Takagi
    1973 Volume 35 Issue 6 Pages 1723-1729
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1723
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The effect of an inhomogeneity of population inversion at an initial Q-switched time on the stability of the giant pulse from of a laser in an axial multimode oscillation was analysed numerically for the laser equation with an unrealistic assumption that the ratio of a cavity relaxation constant to a frequency difference between neighbouring modes is unity, principally. Results indicate that for three mode oscillation there may be an initial spatial distribution of population which would uniform the giant pulse from irrespective of initial field value.
    View full abstract
    Download PDF (840K)
  • Rotational Motion of a Rodlike Molecule in a Potential Cage in Liquids
    Ryuichi Minami, Akiko Ohno
    1973 Volume 35 Issue 6 Pages 1730-1737
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1730
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The rotational motion of a rodlike molecule constrained in a potential cage in liquids is studied. This motion is considered in terms of the correlation in function ⟨Pl[u(0)·u(t)]⟩ of the molecular axis vector u. (Pl is the l’th Legendre polynomial; l=1 and 2 correspond to the vector and the tensor correlation function respectively.) The correlation functions are shown to be composed of two parts: One is due to rotational diffusion caused by variation of the constraining cage, and the other is due to rotational libration inside the cage. The correlation functions and their spectral densities are calculated for two simple types of the constraining potential: Suqare-well and harmonic. The integrated absorption intensity of a pure rotational band for polar rodlike molecules is discussed.
    View full abstract
    Download PDF (904K)
  • Nonlinear Schrödinger Equation on the Molecular Complex in Solution —Towards a Biophysics—
    Sigeo Yomosa
    1973 Volume 35 Issue 6 Pages 1738-1746
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1738
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The first step in the physical abstraction of the biological nature may be opened with the general formulation on the molecular system in aqueous solution. The electronic state of the molecular complex in solvent can be given by the nonlinear Schrödinger equation where the local field acting on the complex is introduced in the form of the self-dependent reaction field due to the polarization of the solvent. With increasing solvent polarity the new state appears. This state is characterized as a super-charge-transfer state. Experimental confirmation for the theory can be found in Foster and Thomson’s experiments on the effect of solvent on charge-transfer complexes and in Nogami et al.’s experiments on the temperature dependence on the charge-transfer interaction. This new state is presented together with the ordinary state as the two states in the allosteric transition of proteins.
    View full abstract
    Download PDF (1048K)
  • Effect of the Energy Transfer from Electrons upon the Sound Wave Velocity in Weakly Ionized Plasma
    Yoshio Ishida, Toshitaka Idehara
    1973 Volume 35 Issue 6 Pages 1747-1752
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1747
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The phase velocity of sound wave is measured as a function of electron density in a weakly ionized plasma.
    The large increase of sound velocity density increased is observed, which cannot be explained by considering only the effect that electrons and ions are perturbed by the sound wave, which in turn modifies the sound wave. The increase of sound velocity can be explained consistently, if the increase of equilibrium temperature of neutrals due to the energy transfer from electrons by elastic collisions is taken into account and the stationary temperature distribution in space is assumed to be attained in finite system. The temperature of neutrals, which has not been measured, can be estimated by the experimental conditions with the aid of the heat conduction theory.
    View full abstract
    Download PDF (752K)
  • Nonlinear Wave-Particle Interaction in a Weak Cold Beam-Plasma System
    Katsuhiro Mizuno, Shigetoshi Tanaka
    1973 Volume 35 Issue 6 Pages 1753-1761
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1753
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    Nonlinear spatial evolutions of both plasma waves and beam electrons are studied in a weak cold beam-plasma system, where the validity of weak turbulent theory is violated. Externally driven single unstable wave grows exponentially until the beam electrons are trapped and begin to revolve in wave phase space. These trapped electrons continue to rotate from initial velocity bunching, to spatial bunching, to velocity bunching, and so on, causing nonlinear wave saturation at a level with ωB⁄γL∼1. Further, when the beam electrons are trapped, there appears the trapped-electron instability at the frequency of ω±ωB. At the phase of the spatial bunching, harmonics of the wave resulted from nonlinearities of the electron orbits become maximum and their power spectra up to the 5th are observed. The results agree with those predicted theoretically by a single wave model.
    View full abstract
    Download PDF (1312K)
  • Radiating Gas Flow of a Large Optical Thickness along a Semi-Infinite Circular Pipe
    Syozo Kubo
    1973 Volume 35 Issue 6 Pages 1762-1766
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1762
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    A theoretical study is made on a grey radiating gas flow along a semiinfinite circular pipe when the global optical thickness is large. The radiave heat transfer is assumed to be of the same order of magnitude as the convective one. Analyses are carried out up to the first two orders of expansion with respect to the inverse square root of the Bouguer number. The first order solution and the solution including the effect due to the radiation slip coincide with those of a flow those of a flow past a semi-infinite flat plate. For the flow outside the pipe, a correction is made on the solution taking into account the effect due to the wall curvature. In the flow inside the pipe, the effects due to the pressure change and the compressibility of the gas appear in addition to the effect due to the wall curvature.
    View full abstract
    Download PDF (572K)
  • Singular Surfaces in Liquid Helium II
    Tatsuo Tokuoka
    1973 Volume 35 Issue 6 Pages 1767-1772
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1767
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The theory of singular surface is applied to the liquid helium II and the sounds defined by the singular surfaces are investigated theoretically. Here Landau’s two-fluid model is adopted as a macroscopic continuous model of helium II, and the singular surface is defined such that the densities, the temperatures, the velocities of superfluid and of normal fluid are continuous while their derivatives have discontinuous jumps across the surface. It is proved that a new sound called the fifth sound may exist, which is a transverse sound fixed in the normal fluid. It is also proved that the theory of singular surface yields Landau’s first and second sounds and Atkins’ fourth sound.
    View full abstract
    Download PDF (584K)
  • Kinetic Theory of Evaporation and Condensation
    Yoshio Sone, Yoshimoto Onishi
    1973 Volume 35 Issue 6 Pages 1773-1776
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1773
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    The behavior of a gas in contact with its condensed phase is considered on the basis of a relaxation model of the linearized Boltzmann equation. The temperature and density distributions of the gas in the Knudsen layer as well as so called slip boundary condition on the interface of the gas and its condensed phase are obtained.
    View full abstract
    Download PDF (424K)
  • Behaviour of Gravitational Fields Containing Fewer Moments of Sources
    B. P. Yadav
    1973 Volume 35 Issue 6 Pages 1777-1784
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1777
    JOURNAL RESTRICTED ACCESS
    Show abstractHide abstract
    It is investigaged in this paper that the behaviour of a gravitational field containing fewer moments is different from the behaviour of a gravitational field containing of all moments of the source. A gravitational field without mass and dipole moment possesses dual properties of being radiative and nonradiative simultaneously as it allows nonradiative motion during its radiative period. Quadrupole moment is absolutely conserved in such a field. The field becomes stationary just after appearance of the tail of outgoing gravitational pulse wave if the field contains only one moment of the source. Certain conditions are obtained under which any particular moment of a gravitational source remains constant. Spin-coefficient tech-nique of Newman-Penrose is used in this paper.
    View full abstract
    Download PDF (956K)
  • NMR Spectrum of FeBe2
    Bernard Lemius
    1973 Volume 35 Issue 6 Pages 1785
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1785
    JOURNAL RESTRICTED ACCESS
    Download PDF (148K)
  • Comment on Anomalous (p, t) Angular Distributions Due to Form Factor Cancellation
    Hajime Ohnuma
    1973 Volume 35 Issue 6 Pages 1786
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1786
    JOURNAL RESTRICTED ACCESS
    Download PDF (128K)
  • ESR Measurement in the Two-Dimensional Ferromagnet Cu(C2H5NH3)2Cl4
    Yoshitami Ajiro, Michinori Miura
    1973 Volume 35 Issue 6 Pages 1787
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1787
    JOURNAL RESTRICTED ACCESS
    Download PDF (156K)
  • Heat Capacity and Magnetic Phase Transition in CeBi
    Takashi Tsuchida, Shinji Onga, Tetsuo Kawai, Shuzo Kawarazaki
    1973 Volume 35 Issue 6 Pages 1788
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1788
    JOURNAL RESTRICTED ACCESS
    Download PDF (148K)
  • Perturbed Angular Correlation Study of the Magnetic C2MnBi Heusler Alloy
    J. Schaf, F. C. Zawislak, E. R. Fraga
    1973 Volume 35 Issue 6 Pages 1789
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1789
    JOURNAL RESTRICTED ACCESS
    Download PDF (156K)
  • Microwave Dielectric Nonlinearity of Ferroelectric Triglycine Sulfate
    Takashi Matsuda, Ryuji Abe
    1973 Volume 35 Issue 6 Pages 1790
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1790
    JOURNAL RESTRICTED ACCESS
    Download PDF (148K)
  • ESR Study of Radiation Damage Centers in ADP : K2SeO4 Mixed Crystals
    Takamasa Kawano, Kazuo Furukata
    1973 Volume 35 Issue 6 Pages 1791
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1791
    JOURNAL RESTRICTED ACCESS
    Download PDF (132K)
  • Weisenberg Effect of Concentrated Solutions of Poly-γ-Benzyl-L-Glutamate
    Eisaku Iizuka
    1973 Volume 35 Issue 6 Pages 1792
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1792
    JOURNAL RESTRICTED ACCESS
    Download PDF (144K)
  • Magnetic Surfaces of Stellarator Field with a Current-Carrying Plasma
    Kenro Miyamoto, Nobuyuki Inoue
    1973 Volume 35 Issue 6 Pages 1793
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1793
    JOURNAL RESTRICTED ACCESS
    Download PDF (164K)
  • Induced Radial Velocity of Shocked Plasma Flow Due to Wall Boundary Layer
    Seishiro Hashiguchi, Noriaki Gohda
    1973 Volume 35 Issue 6 Pages 1794
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1794
    JOURNAL RESTRICTED ACCESS
    Download PDF (172K)
  • Spin Correlations and Sublattice Magnetization of K2CoF4
    Hironobu Ikeda, Kinshiro Hirakawa
    1973 Volume 35 Issue 6 Pages 1795
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1795
    JOURNAL RESTRICTED ACCESS
    Download PDF (152K)
  • On Generation of Dispersive Long Waves on a Rotating Ocean by Wind Stress Distributions
    Lokenath Debnath, Andrew G. Kulchar
    1973 Volume 35 Issue 6 Pages 1796A
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1796A
    JOURNAL RESTRICTED ACCESS
    Download PDF (32K)
  • Long Waves on a Rotating Sea Due to Travelling Disturbances
    Kalyan Kumar Bagchi, Lokenath Debnath
    1973 Volume 35 Issue 6 Pages 1796B-1797
    Published: December 05, 1973
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1796B
    JOURNAL RESTRICTED ACCESS
    Download PDF (60K)
  • Point Defect Clusters in Electron-Irradiated Gold
    Naoaki Yoshida, Michio Kiritani
    1973 Volume 35 Issue 6 Pages 1797
    Published: December 05, 1973
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.35.1797
    JOURNAL RESTRICTED ACCESS
    Download PDF (16K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top