Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
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Volume 41, Issue 6
Displaying 51-56 of 56 articles from this issue
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  • Thermal Expansion and Crystal Distortion of NiS2
    Hideo Nagata, Hiroki Ito, Tomonao Miyadai
    1976Volume 41Issue 6 Pages 2133-2134
    Published: December 15, 1976
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2133
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    Thermal expansion of NiS2 single crystal was measured by strain gauge method with the interest in the crystal distortion below TN1 and/or Tc. The lattice contracts abruptly below Tc. The contractions between Tc and 15 K along [100], [110] and [111] are Δ100=12×10−5, Δ110=20×10−5 and Δ111=24×10−5, respectively. It is inferred that NiS2 undergoes a slight distortion from cubic symmetry below Tc. On the assumption that NiS2 had been cooled in a stress along the direction of strain gauge, it is concluded that NiS2 undergoes a tetragonal distortion. The tetragonality (c−a)⁄a is estimated to be 1.6×10−4.
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  • Photoemission Due to Direct Transition Near L and M Points in CdS Crystal
    Fuminori Shiga, Shunji Imamura
    1976Volume 41Issue 6 Pages 2135-2136
    Published: December 15, 1976
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2135
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    A structure of energy distribution curves has been found at 7.4 eV in photoemission experiments on CdS single crystals cleaved in ultra-high vacuum. The peak is considered to arise from the electronic transition around the L and M points in the Brillouin zone which corresponds to the shoulder E2 in the reflectivity spectrum measured by Cardona and Harbeke. Once-inelastically-scattered electrons and thermalized ones have been observed separately. The thermalization occurs at the K point in the Brillouin zone.
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  • A Note on the Spin-Orbit Interation of the Relaxed Excited State of the F Centers
    Hiroshi Ohkura, Koichi Imanaka, Takehiro Kamimura, Takeshi Iida
    1976Volume 41Issue 6 Pages 2137-2138
    Published: December 15, 1976
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2137
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    Based on the Bogan and Fitchen model of the RES, the spin-orbit interaction constant of the p orbital, λp, has been related to the observed quantities. Thus estimated λp values are large of about 20 meV for KCl and KBr. The gorb values are also determined: They are less than unity showing reduction due to vibronic structure. The fraction of p-function at the lowest RES, which is important for our analysis, has been estimated experimentally.
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  • Light Scattering of Dipalmitoyl Lecithin Vesicles
    Kiyoshi Mishima
    1976Volume 41Issue 6 Pages 2139-2140
    Published: December 15, 1976
    Released on J-STAGE: May 29, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2139
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    The technique of light scattering is applied to study phase transitions in dipalmitoyl lecithin vesicles in dilute suspensions of 0.05 mg/ml. The intensity curve of scattered light showed a maximum in the region of the phase transition temperature. Above the transition temperature, the scattered intensity decreases to about 58% of the intensity at 20°C and the equivalent Stokes radii of vesicles increase. In the presence of 3 mM CaCl2, the maximum in the intensity is not observed and the Stokes radii do not change in the temperature range of 20∼50°C.
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  • N-Soliton Solution of the K-dV Equation with Loss and Nonuniformity Terms
    Ryogo Hirota, Junkichi Satsuma
    1976Volume 41Issue 6 Pages 2141-2142
    Published: December 15, 1976
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2141
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    N-soliton solution of the Korteweg-de Vries equation with loss and nonuniformity term
    ut+2αu+(c0+αx)ux+6uux+uxxx=0,
    are obtained. The solutions express multisolitons damping in time without radiation and mutually colliding in nonuniform media with a relaxation effect.
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  • Slow Motion of a Small Sphere in a Cylindrical Domain
    Hidenori Hasimoto
    1976Volume 41Issue 6 Pages 2143-2144
    Published: December 15, 1976
    Released on J-STAGE: June 01, 2007
    DOIhttps://doi.org/10.1143/JPSJ.41.2143
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    A general study is made on the slow motion of a viscous incompressible fluid bounded by cylindrical boundaries. The solution of the Stokes equations of motion is reduced essentially to a simple boundary value problem for three harmonic functions. The correction factor to the force on a small sphere moving in a plane perpendicular to the axis of a circular tube is determined to the first order effect of the boundary. A striking result is that in the vicinity of the axis the force is less than that due to the axial motion.
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