Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
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Volume 32, Issue 6
Displaying 1-49 of 49 articles from this issue
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  • The Effect of Proton-Neutron Interactions on Energy Spectra of Nuclei of A\simeq120–145
    Kohsuke Yagi
    1972 Volume 32 Issue 6 Pages 1457-1461
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1457
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    The location of neutron-single hole states 2d3⁄2, 3s1⁄2, 1h11⁄2 and 2d5⁄2 in neutron magic N=82 nuclei 136Xe, 138Ba, 140Ce, 142Nd and 144Sm is studied on the basis of proton-neutron interactions. The observed variations of the neutron-single hole energies of 2d3⁄2, 1h11⁄2 and 2d5⁄2 states relative to that of the 3s1⁄2 state in going from 135Xe to 143Sm are reproduced fairly well by the use of an interaction Vpn=(V0+V1σp·σn)δ(rp−rn) and of harmonic oscillator wave functions. The proton configurations which have been obtained from proton-transfer reactions on these isotones are employed in the calculations. Also the dominant features of the neutron-state structures and the proton-state structures observed in N=82 isotones and Z=50 isotopes are discussed from the standpoint of the proton-neutron interactions.
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  • Decay of 112In
    Nobuharu Yoshikawa, Mitsuo Sakai
    1972 Volume 32 Issue 6 Pages 1462-1465
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1462
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    A study of log ft values of the beta decay of the 1+ ground state in 112In to the 0+, 21+, 22+, 23+, 01+, 02+ and O3+, ground, first, second and third excited 2+ and three excited 0+ states in 112Cd is presented. It shows successive increases in the log ft values for decays to the first and second excited 2+ states. The small retardation of the transition to the third excited 2+ state and the different retardations among the decays to the excited 0+ states are discussed in terms of quasi-band conception and in reference to the relevant experimental facts of neighbouring nuclei.
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  • The 54Fe(p, d)53Fe Reaction at 52 MeV
    Hajime Ohnuma, Teruo Suehiro, Yoshihide Ishizaki, Jun Kokame, Itaru No ...
    1972 Volume 32 Issue 6 Pages 1466-1471
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1466
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    The 54Fe(p, d)53Fe reaction was studied at 51.93 MeV with a magnetic spectrometer. Results were analyzed in terms of distorted wave Born approximation theory to obtain transferred l-values and spectroscopic factors. The f7⁄2 spectroscopic factor for the ground state was 3.0. Unambiguous l=1 transitions to the levels at 0.74, 2.02 and 3.74 MeV were observed.
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  • Improved Gamma-Ray Energies for the Decay of 129Cs
    H. W. Taylor, B. Singh
    1972 Volume 32 Issue 6 Pages 1472-1474
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1472
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    The gamma rays accompanying the decay of 32-hr 129Cs have been studied with a 25 cm3 Ge(Li) spectrometer. Transition energies have been determined with improved precision and internal consistency. Levels in 129Xe were confirmed at 39.58±0.05, 318.4±0.1, 321.9±0.2, 411.7±0.2, 588.7±0.1, 903.8±0.8 and 946.0±0.2 keV.
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  • Contribution to the Many Site Theory of the Disordered System
    Masaru Tsukada
    1972 Volume 32 Issue 6 Pages 1475-1485
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1475
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    The extension of the single site CPA to the many site approximation is investigated in the cellular disordered crystal. The crystal is divided into cells and considered as if it were a ‘molecular crystal’ composed of the cells. The single site CPA is applied to this ‘mixed molecular crystal.’ The three types of the coherent potentials; A) the cell diagonal, B) the k-dependent, C) the site diagonal coherent potential are proposed and their properties are discussed. The approximation by the cell diagonal coherent potential is shown to be equivalent to the cell method reported previously by the author.
    The method of the site diagonal coherent potential is very simple and convenient for the numerical calculation. The phonon spectrum of the isotopically disordered chain is calculated by this method and compared with the result by NFC.
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  • Short Range Order Effect on the Magnetic Anisotropy in a Heisenberg Linear Chain Antiferromagnet CsMnCl32H2O
    Kazukiyo Nagata, Yuichi Tazuke, Kuniro Tsushima
    1972 Volume 32 Issue 6 Pages 1486-1492
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1486
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    Torque measurements were done for CsMnCl32H2O in order to investigate the short range order effect on the magnetic anisotropy in a Heisenberg linear chain antiferromagnet. Above 10 K, the anisotropy in the paramagnetic susceptibility has a uniaxial symmetry referred to the direction of chains (a-axis) corresponding to the essential intrachain spin correlations and, below this temperature, it becomes orthorhombic because of the evolution of three-dimensional magnetic correlations. The magnitude and temperature dependence of the axial anisotropy observed above 10 K could be explained by the classical linear chain model including only a small dipolar term as an anisotropy term.
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  • Asymmetric 180° Domain Walls in Single Crystal Iron Films
    Sonoko Tsukahara, Hisazo Kawakatsu
    1972 Volume 32 Issue 6 Pages 1493-1499
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1493
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    New kinds of contrasts of domain wall images have been observed by 1000 kV Lorentz microscopy for single crystal iron films with the thickness ranging 1000–2600 Å. The observed asymmetric contrast agrees with a numerically calculated contrast for the two-dimensional 180° wall with a magnetostatic energy free structure. The wall width of the asymmetric wall is much broader than that of the Bloch wall. The experimentally observed widths of 1500 Å to 3000 Å are comparable with the calculated value of 2200 Å for the 2000 Å thick iron film.
    The wall energy of the asymmetric 180° wall for a thickness range 400–3500 Å is always much lower than that of the 180° Bloch wall.
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  • Ferromagnetic Resonance of Electrically Conductive Manganese Ferrites
    Yoshiyuki Watanabe, Shozo Saito, Susumu Takemoto
    1972 Volume 32 Issue 6 Pages 1500-1506
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1500
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    Resonance experiments have been performed between 77–350 K at 9.3 GHz on single crystal spheres of manganese ferrite of low resistivities (0.1∼0.3 Ω cm at room temperature). The linewidth shows a maximum at a temperature from 100 K to 200 K, with a marked dependence upon the sample size as well as upon the resistivity of specimen. A characteristic deviation of the resonance field in ⟨111⟩ from that expected by Kittel’s formula is also noted. Detailed description is given to show the observed results to be attributable to an eddy current effect rather than due to the so-called slow or fast relaxation mechanisms. The linewidth maximum is interpreted to occur in a temperature region over which the excitation of resonant mode varies from “surface type” to “volume one” corresponding to the change in skin depth.
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  • ESR of CuMn Dilute Alloys Studied in Thin Films
    Hiroyuki Nagashima, Hidetaro Abe
    1972 Volume 32 Issue 6 Pages 1507-1518
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1507
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    The bottleneck between the conduction electron spins and the lattice system in CuMn dilute alloys is opened by making the specimens into thin films. In the paramagnetic region, an additional relaxation due to surface collisions makes the resonance line broader. The probability of a conduction electron losing its spin memory by a single collision with surfaces is concluded to be 0.04, which is consistent with that in pure copper deduced from the experiments of Schultz et al. (0.02) and much larger than by a collision with an impurity Mn atom in the alloy. In the antiferromagnetic region, the shift in the resonance field as well as the linewidth in thin films is clearly enhanced compared with those in bulk samples. Less detailed experiments in dilute AgMn alloys show the similar results. The origins of the shift are discussed.
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  • Energy Levels of Iron Group Impurities in TiO2
    Koichi Mizushima, Mitsuaki Tanaka, Shuichi Iida
    1972 Volume 32 Issue 6 Pages 1519-1524
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1519
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    By changing the location of Fermi level of TiO2 by lithium doping, ESR signals of some transition metal impurities in this crystal were pursued. The conclusions are: the Cr3+, Mn4+ and Fe3+ levels are near or overlapped with the valence band, the V3+, Mn2+ and Fe2+ levels are near the conduction band, the Cr2+ level is above the bottom of the conduction band, the Mn3+ and V4+ levels are near the center of the band gap, and consequently the energy level separation between Mn2+ and Mn3+ and that of V3+ and V4+ are small (i. e. less than 2 eV). The calculated level structures with the aid of these experimental results are related to the metallic and insulative nature of magnetic oxides, in general.
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  • Magnetic Resonance in the Spiral Phase of Polycrystalline MnAu2 at 20–26 GHz
    L. W. Hart, J. L. Stanford
    1972 Volume 32 Issue 6 Pages 1525-1530
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1525
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    Microwave absorption has been studied at 20–26 GHz in polycrystalline MnAu2 over a temperature range of 5–440 K and in magnetic fields up to 20 kOe. MnAu2 has planar spiral magnetic ordering below a Néel temperature of TN=363 K. Paramagnetic resonances was observed above TN. Although theory predicts no low frequency resonance in the spiral magnetic phase below TN, two distinct absorption peaks were observed and studied as functions of frequency, polarization, magnetic field, and temperature. One set of resonances is consistent with paramagnetic resonance of a postulated disordered spin component in the spiral phase of MnAu2. Possible explanations for the second resonance are discussed. A possible resonance in the fieldinduced fan phase of MnAu2 was also observed.
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  • The Internal Hyperfine Magnetic Fields on Arsenic in Cobalt and Nickel Hosts
    A. K. Dhar, Bhupender Sings, Vikram Sings, H. S. Hans
    1972 Volume 32 Issue 6 Pages 1531-1535
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1531
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    The hyperfine internal magnetic fields on arsenic nuclei in cobalt and nickel hosts have been measured by the integral reversed field method of perturbed angular correlation technique. The 5+/2 (121.1 keV) 5−/2 (279.6 keV) 3−/2 cascade in 75As was used for the directional correlation and rotation measurements. Using g=0.36±0.04 and τ=(4.67±0.43)×10−10 sec for the 279.6 keV level of 75As, the hyperfine fields on arsenic in cobalt and nickel at room temperature have been found to be
    HCoAs=+252±45 kOe,
    HNiAs=+121±20 kOe,
    respectively. The hyperfine fields on arsenic in iron, cobalt and nickel hosts seem to be predominantly proportional to the effective host moments.
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  • An Electron Microscope Study of Dislocation Arrangement in the Surface Layer of Aluminum Single Crystals
    Teizô Tabata, Hiroshi Fujita
    1972 Volume 32 Issue 6 Pages 1536-1544
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1536
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    The dislocation arrangements in the surface layer of deformed aluminum single crystal oriented with single slip systems and with double slip ones have been examined by the transmission electron microscopy as a function of strain.
    Dislocation density in the surface layer is slightly higher than that in the interior at the apparent yield point. It decreases once after the yielding, and then gradually increases with increasing the strain. In the interior, increasing rate of dislocation density is higher and dislocation tangles are well developed compared with those in the surface layer.
    Dislocation tangles in the surface layer have a tendency to develop along the trace of primary slip plane in the specimens oriented with a single slip system. On the other hand, they show a tendency to develope along a direction intersecting the primary slip plane, which is roughly parallel to the secondary slip trace, in the specimens oriented with double slip system.
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  • Multiple Kink Effect in Graphite
    Haruhisa Hayashi, Kazuhiko Yazawa
    1972 Volume 32 Issue 6 Pages 1545-1549
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1545
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    It is found that the current-voltage relation of graphite has three kink points under the influence of a transverse magnetic field at 77 K and 300 K.
    This phenomenon, in spite of its appearance at these high temperature, is identified as Esaki effect, and three kinks are attributed to the interaction between carrier particles and three modes of phonons. In graphite carriers interact with the transverse mode as well as the longitudinal one unlike in an ordinary non-polar material.
    A theoretical analysis yields an information on the number of the carriers contributing to each mode.
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  • Effects of Magnetic Field on Electron Transfer and Velocity-Field Characteristic in Gallium Arsenide
    Akio Sasaki, Hidetoshi Oheda, Tetsuo Tanaka
    1972 Volume 32 Issue 6 Pages 1550-1555
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1550
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    The effects of a magnetic field on the electron transfer and the velocity-field characteristic of gallium arsenide have been investigated theoretically and experimentally. The effects of a magnetic field can be summarized as follows: (1) the rate of electron transfer is reduced; (2) the drift velocity along an applied electric field decreases in a low-field region; (3) the threshold field shifts to a higher field; and (4) the drift velocity along an applied electric field increases in a high-field region. These effects can be understood in terms of the magnetoresistance effect, with which the drift velocity is decreased, and the magnetic cooling effect, with which the energy in the random motion is decreased, of the electrons in a single valley of the conduction band. The experiment to measure the current-field characteristic by the microwave technique shows qualitative agreement with the characteristic obtained by the theory.
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  • The Dependence of the Coercive Field of Tri-Glycine Sulfate on Frequency, Amplitude and Temperature
    Noriyuki Nakatani
    1972 Volume 32 Issue 6 Pages 1556-1559
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1556
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    Hysteresis loops of tri-glycine sulfate single crystal have been observed from 0°C up to Curie point. The frequency used was 0.6∼60 Hz, and the amplitude was 0∼several kV/cm. The observed coercive field was compared with the result obtained by using a two-dimentional residual nuclei model [J. Janta: J. Phys. Soc. Japan. 28 (1970) Suppl. p. 340]. The amplitude dependence of the coercive field agrees to that result, but the frequency dependence does not. This model would be too simple for the nucleation mechanism, but it is practical that the sideways domain wall motion velocity is given by the relation v=v∞exp(−α⁄E). The temperature dependence of the activation field α is different from that of BaTiO3. The product of α and absolute temperature is proportional to the square of the spontaneous polarization.
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  • X-Ray Critical Scattering in NH4Br
    Hikaru Terauchi, Yukio Noda, Yasusada Yamada
    1972 Volume 32 Issue 6 Pages 1560-1564
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1560
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    A detailed observation of X-ray diffuse scattering in CsCl-type NH4Br has been carried out in order to investigate the property of the microscopic interaction to cause the order-disorder phase transitions in this substance. The experimental results are summarized as follows. (i) Diffuse scattering peaked at the super lattice points has been observed up to 30 K above the critical temperature of the cubic (disordered) to tetragonal phase transition. (ii) The temperature dependence of the diffuse scattering shows a typical feature of critical scattering observed in the process of ordering of various physical quantities. In the present case, the critical scattering is attributed to the correlated fluctuation of displacements of Br− ions. (iii) The distribution of the diffuse scattering intensity in the reciprocal space is anisotropic, the intensity contours showing an elongation along [110] direction of the cubic unit cell. These experimental results are consistent with the theory in which the system is treated as an Ising spin-phonon coupled system.
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  • A Microscopic Theory on the Phase Transitions in NH4Br —An Ising Spin Phonon Coupled System—
    Yasusada Yamada, Masahiro Mori, Yukio Noda
    1972 Volume 32 Issue 6 Pages 1565-1576
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1565
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    CsCl type NH4Br crystal has been treated as an Ising spin-phonon coupled system to explain the phase transitions associated with the orientational order of NH4+ ions. The appearance of two ordered phases is explained as essentially due to the fact that the direct interaction between NH4+ ions stabilizes parallel ordering while the indirect interaction through phonons stabilizes the antiparallel ordering. Based on a microscopic hamiltonian describing the spin-phonon coupled system, several experimental results have been analized such as (i) anomalous lattice expansions (ii) orientational order parameters (iii) spontaneous displacement of Br− ions (iv) P–T phase diagram (v) X-ray critical diffuse scattering. Semiquantitative agreements are obtained. Especially the property of correlated fluctuations of displacement of Br− ions seems to give a support on the validity of the microscopic model used.
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  • Phonon-Assisted Energy Transfer between Trivalent Rare Earth Ions
    Naoto Yamada, Shigeo Shionoya, Takashi Kushida
    1972 Volume 32 Issue 6 Pages 1577-1586
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1577
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    Nonresonant phonon-assisted energy transfer between trivalent rare earth ions is studied using Y2O3 as the host crystal. The transfer probabilities are obtained from the analysis of the decay rates of donor luminescence for various combinations of donor and acceptor ions in which energy gap, i.e. mismatch of energy, is varied in a wide range up to 4000 cm−1. The probabilities are decreased exponentially with the increase of energy gap in agreement with the theory of Miyakawa and Dexter. The observed value of the parameter expressing the exponential dependence agrees with the theoretically estimated value. The temperature dependence of the probabilities presents the direct evidence that the mismatch of energy is compensated by the emission of phonons. It is revealed that the phonon of about 400 cm−1 which produces the highest intensity in vibronic sidebands contributes dominantly to the phonon-assisted process.
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  • Energy Distribution of Electrons from Thermionic Cathodes with a Wehnelt Cylinder
    Tamotsu Ohno
    1972 Volume 32 Issue 6 Pages 1587-1594
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1587
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    The energy distribution in 26 keV electron beams was measured by a retarding potential analyser. Beams of small angular divergence were used to eliminate the apparent increase of energy width. The beam current was changed by varying the negative bias voltage Vg at fixed cathode temperatures. For a tungsten hairpin cathode at 2620 K (Maxwellian width=0.62 eV), for example, the energy width ΔEi was 0.33 eV just above the cut-off voltage. It increased with the decrease of |Vg|, reached a maximum (ΔEi=2.3 eV) and then decreased. When the image of the cathode tip was focused on the entrance aperture of the analyser, ΔEi decreased to 1.1 eV. These results can be interpreted by the filtering effect of the bias potential and the change of the effective size of electron source which is caused by the change of the bias voltage.
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  • The Electronic Structure of the Ground State of the HeH+ Molecule
    Toshiko Yamada, Hiroshi Sato, Eiichi Ishiguro, Terashi Takezawa
    1972 Volume 32 Issue 6 Pages 1595-1604
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1595
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    The total electronic energy of HeH+ is calculated with the wave functions in which the “in-out correlation” is included by using two different 1s Slater type atomic orbitals of He. The conclusion is that the effect of the in-out correlation of electrons in the vicinity of the He nucleus is considerable in HeH+, though it is somewhat smaller than that in the He atom. Among the four wave functions employed here, the simplest one can give the qualitative explanation of the electronic structure of this system. The results computed with the simplest wave function are E(Re)=−2.935026999 a.u., Re=1.46663 a.u. ωe=3.1×103 cm−1 and De=1.62 eV. The best values of E(Re) and Re, calculated by use of the most flexible wave function, amount to −2.93819775 a.u. and 1.4648 a.u., respectively.
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  • Rotational Transitions in the HD Molecule in Low-Energy HD–He Collisions
    Yukikazu Itikawa, Kazuo Takayanagi
    1972 Volume 32 Issue 6 Pages 1605-1611
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1605
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    The close coupling method has been applied to the rotational transitions in the low energy HD–He collisions. The interaction potential for the system has been derived from the theoretical potential for the H2–He system by shifting the center of mass of the molecule. The rotational relaxation time has been calculated in the temperature range from 10 to 50 K, and compared with the recent measurement by Prangsma, et al. A good agreement has been obtained between theory and experiment.
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  • Charge Transfer and Fine Structure Transitions in Kr+(2Pj)+Kr and Xe+(2Pj)+Xe Collisions
    R. E. Johnson
    1972 Volume 32 Issue 6 Pages 1612-1614
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1612
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    Cross sections for charge transfer and fine-structure transitions within the 2P multiplet have been calculated for the Kr+(2PJ)+Kr(1S0) and Xe+(2PJ)+Xe(1S0) collisions by the impact parameter method. A previously published method for calculating the exchange energies and subsequently the charge transfer cross section for Ar++Ar is improved to account for the larger spin-orbit splitting in these systems. Relative effciencies of the charge transfer process calculated for primary ions in the different fine-structure states 2P3⁄2 and 2P1⁄2 are found to agree closely with a recent experiment.
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  • Ultrasonic Absorption in Binary Mixtures of Carbon Disulphide in Comparison with Bauer’s Theory
    K. Samal, S. C. Misra
    1972 Volume 32 Issue 6 Pages 1615-1618
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1615
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    A calculation has been made according to the theory of Bauer and Pinkerton to explain the experimental findings on variation of ultrasonic absorption coefficient with concentration of organic liquids like C6H6, CCl4, CH3I, C6H5Cl, C6H5NO2 and C2H5I with their α⁄f2 values (α-amplitude absorption coefficient and f-frequency) ranging from 900×10−17 c.g.s to 40×10−17 c.g.s in binary mixtures of CS2. The disagreement between the calculated and experimental results that the theories of Pinkerton and Bauer are not working well for most of the mixtures containing CS2 even though their components are nonassociative and noninteracting.
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  • Determination of the Plasma Density in a Collisionless Plasma
    Toshihiko Dote
    1972 Volume 32 Issue 6 Pages 1619-1626
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1619
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    In place of Lam’s unified probe theory in a collisionless plasma, which is valid in the limit of ξe (the ratio of the probe radius to the Debye radius of the plasma)→∞, a probe theory for a finite ξe is developed. Some diagrams for determination of the plasma density from the positive ion current-voltage characteristics of the probe are also presented. Moreover a few kinds of experiments in a mercury diffusion plasma are carried out in order to verify the theory in rather wider condition and exemplify some applications to the theory in lower pressure plasma.
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  • Discontinuities in a Collisionless Plasma Flow Having a Strong Magnetic Field
    Shigeki Morioka, Yasuji Matsumoto
    1972 Volume 32 Issue 6 Pages 1627-1635
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1627
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    Discontinuties in a collisionless anisotropic plasma flow having a strong magnetic field, their evolutionary condition, and the hose and mirror instability conditions for associated flow are considered on the basis of Chew, Goldberger and Low theory. Zero heat fluxes are assumed in both sides of the discontinuity, and the energy equation for transverse thermal motion is replaced by the adiabatic relation. Solutions are presented analytically and numerically for special angles of discontinuity and special upstream conditions. As a conclusion, it is found that remarkable differences exist between CGL discontinuity and MHD shock wave.
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  • On the Stability of Isolating Integrals. I. Effect of the Perturbation in the Potential Function
    Yôji Aizawa, Nobuhiko Saitô
    1972 Volume 32 Issue 6 Pages 1636-1640
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1636
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    The stability of isolating integrals against the perturbation of potential function was studied by the method of surface of section in the classical dynamical system of two degrees of freedom with the hamiltonian,
    (Remark: Graphics omitted.),
    in the range −1<ε<1. This system has isolating integrals in this range. Their structure is found to change discontinuously at ε=−1⁄2 and ε=0.
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  • Hypo-Elastic Dielectrics. I. Constitutive Equations
    Tatsuo Tokuoka
    1972 Volume 32 Issue 6 Pages 1641-1646
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1641
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    The hypo-elastic dielectric continuum is investigated theoretically and its constitutive equations are defined as a natural extension of the elastic dielectric continuum. The birefringence and extinction angle for dielectric are derived shortly from the Maxwell-Lorentz field theory. The mechanical and optical constitutive equations of compressible and incompressible hypo-elastic dielectrics are defined generally on the basis of the rate type constitutive equations of isotropic elastic dielectric. According to the representation theorem for tensor-valued isotropic function, the explicit representations of the constitutive equations of grade zero, one and two are given.
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  • Hypo-Elastic Dielectrics. II. Birefringence in Simple Shear
    Tatsuo Tokuoka
    1972 Volume 32 Issue 6 Pages 1647-1654
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1647
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    The mechanical and optical properties of the hypo-elastic dielectrics are investigated theoretically in the case of simple shear and of grade one. The sets of ordinary linear differential equations of stress and index tensors are derived from the constitutive equations for the deformation of simple shear and their solutions are obtained analytically. In simple shear the dimensionless shear stress depends on a dimensionless mechanical constant and the dimensionless birefringence depends on two dimensionless material constants, i.e., mechanical and optical constants. The stresses, birefringence and extinction angle are calculated for several values of two constants and depicted against the angle of shear. It is shown that shear stress and birefringence may be subjected to a kind of yield phenomenon, i.e., the hypo-elastic mechanical and optical yields.
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  • Slow Motion in a Two-Dimensional Semi-Infinite Channel with Moving Walls
    Tutomu Kambe, Akio Fukuyu
    1972 Volume 32 Issue 6 Pages 1655-1663
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1655
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    Investigations are made of the two-dimensional flow of a viscous incompressible fluid due to slow and steady motion of a plane piston in a channel. Three methods are adopted: analytical, numerical and composite ones. Numerical errors of the velocity distribution on the walls derived by Dean’s technique are found to be less than 1.1%. Vorticity distributions on the walls obtained by the three methods are compared. The vorticity becomes infinite as r−1 when the distance r from a corner tends to zero, where the wall velocity is discontinuous and the numerical solution becomes invalid. It is found that the composite method gives the most accurate and uniform approximation.
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  • Anomalous Thermal Change of Permeability of Ferrites at Curie Temperature
    Keizo Hisatake, Keizo Ohta
    1972 Volume 32 Issue 6 Pages 1664
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1664
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  • Application of the Coherent Potential Approximation to Ferromagnetic Ternary Alloys FexCoyNiz
    Takeo Jo, Hideo Hasegawa, Junjiro Kanamori
    1972 Volume 32 Issue 6 Pages 1665
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1665
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  • Magnetic Contribution of Columnar Grains in Cobalt Films Evaporated at Oblique Incidence
    Susumu Keitoku, Takashi Hashimoto, Eiji Tatsumoto
    1972 Volume 32 Issue 6 Pages 1666
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1666
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  • Thermal Conduction in a Two-Dimensional Antiferromagnet Cu(HCOO)2·4H2O
    Kazuyoshi Hirakawa, Hatsuo Hayashi, Hidetoshi Miike
    1972 Volume 32 Issue 6 Pages 1667
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1667
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  • Magnetic Susceptibility of Superconducting Tin Fine Particles
    Takeshi Takahara, Shun-ichi Kobayashi, Wataru Sasaki
    1972 Volume 32 Issue 6 Pages 1668
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1668
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  • A Remark on the Cyclotron Resonance of Piezoelectric Polarons in CdS at Far-Infrared Region
    Giyuu Kido, Keigo Nagasawa, Shin-ichiro Narita
    1972 Volume 32 Issue 6 Pages 1669
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1669
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  • Neutron Structure Analysis of CsH3(SeO3)2 at Room Temperature
    Shoichi Sato
    1972 Volume 32 Issue 6 Pages 1670
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1670
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  • Emission of CuI Crystal at High Density Excitation
    Chong In Yu, Takenari Goto, Masayasu Ueta
    1972 Volume 32 Issue 6 Pages 1671
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1671
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  • Pressure Dependence of Cubic-Tetragonal Transition Temperature of CsPbCl3
    Michio Midorikawa, Yoshihiro Ishibashi, Yutaka Takagi
    1972 Volume 32 Issue 6 Pages 1672
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1672
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  • Quench of Sound Amplification and Electromagnetic-Wave Radiation by Holes in n-InSb
    Tadao Ishii
    1972 Volume 32 Issue 6 Pages 1673
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1673
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  • Resonant Raman Effect on CdS1−xSex Mixed Crystals
    Takaaki Fukumoto, Hideo Yoshida, Shin-ich Nakashima, Akiyoshi Mitsuish ...
    1972 Volume 32 Issue 6 Pages 1674
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1674
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  • Study of the Critical Slowing Down of the Dielectric Relaxation in AgNa(NO2)2 by Thermal Moise Measurements
    Yasunori Tominaga, Sumio Wada, Shuichi Iida
    1972 Volume 32 Issue 6 Pages 1675
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1675
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  • Ionization Relaxation Times in Shock-Heated Argron and Xenon
    Hiromichi Ezumi, Yuji Enomoto, Masahiko Kawamura
    1972 Volume 32 Issue 6 Pages 1676
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1676
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  • Drag of a Finite Flat Plate Set Parallel to a Uniform Flow
    Akira Yoshizawa
    1972 Volume 32 Issue 6 Pages 1677
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1677
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  • Magnetic Field Dependence of the Spin Lattice Relaxation of Co60 in Very Dilute Co–Fe Alloys at Very Low Temperature
    Shotaro Kohzuki, Yukio Aoki, Naohiko Yamashita, Junkichi Itoh
    1972 Volume 32 Issue 6 Pages 1678
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1678
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  • Ferroelectric Hysteresis Loop of AgNa(NO2)2 by Quasi-Static Electric Field
    Kazuo Gesi
    1972 Volume 32 Issue 6 Pages 1679
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1679
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  • Major Radius Oscillation of a Plasma Column
    Masatoshi Tanaka, Takasi Tuda, Noboru Fujisawa, Tatsuoki Takeda
    1972 Volume 32 Issue 6 Pages 1680
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1680
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  • The Exact Solution of the Modified Korteweg-de Vries Equation
    Miki Wadati
    1972 Volume 32 Issue 6 Pages 1681
    Published: June 05, 1972
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1681
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  • Martensitic Transformation in Splat Quenched β Ag–Al Alloys
    Shant P. Gupta
    1972 Volume 32 Issue 6 Pages 1682
    Published: June 05, 1972
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.32.1682
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