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- Proceedings of the Physico-Mathematical Society of Japan. 3rd Series
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Volume 17, Issue 6
Displaying 1-40 of 40 articles from this issue
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Kiyoshi Murakawa1962 Volume 17 Issue 6 Pages 891-896
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe shielding correction Δ defined by Q=(1+Δ)Q′ (Q=true quadrupole moment; Q′=apparent quadrupole moment obtained by spectroscopic means neglecting the shielding effect) was investigated in the cases of the state 5d46s of Ta I and 5d66s6p of Os189 I. In these cases the correction Δ for the group 5d46s or 5d66s was found to be of the order of 9±5; namely the shielding effect predominates over the antishielding effect. It is highly probable that Δ is around zero in the state 5d6 of Os I. The quadrupole moment of Os189 is 0.8±0.2 barn. The hyperfine structure due to Os187 was also studied, and μ(187)=+0.0656±0.0006 nm, was obtained.View full abstractDownload PDF (604K) -
Kunio Takamatsu1962 Volume 17 Issue 6 Pages 896-906
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe angular distributions of the emitted alpha particles from the (d, α) reactions on F19, Ne20, P31 and S32 leading to the ground states and several excited states of the residual nuclei have been measured at an incident deuteron energy of 14.7 Mev. The emitted alpha particles were detected with a solid state detector of a silicon p-n junction.
The alpha particle groups, α0 of the ground state transitions for all targets and the alpha particle groups of several excited state transitions for F19 and S32 show pronounced peaks at forward angles and oscillatory behaviors in the angular distributions, which were compared, and were in good agreement, with the theory of the two nucleon pickup process.
The angular distributions of other alpha particle groups for excited state transitions show nearly symmetrical behaviors about 90° and the cross sections of them are smaller by about a factor of 2∼5 than those of α0. These facts suggest that these reactions occur through different process, and are consistent with the level structures of residual nuclei predicted from the shell model.
The mass number dependence of the integrated cross sections for the ground state transitions was obtained. The values of the cross sections are proportional to the inverse cubes of mass number A and the values of the cross sections for even-even nuclei are larger by about a factor of 3 than those for odd-odd and odd nuclei, in the mass region 14\lesssimA\lesssim 32.View full abstractDownload PDF (1380K) -
Soji Kono1962 Volume 17 Issue 6 Pages 907-914
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe decay of Ga68 (68 min) has been investigated with beta- and gamma-ray scintillation spectrometers. Two beta-ray components with endpoint energies of 1.95±0.03 MeV, and 0.88±0.05 MeV are observed. Gamma-rays of 0.80±0.02, 1.08±0.01, 1.24±0.02 and 1.88±0.01 MeV are confirmed. Angular correlation of the 1.08–0.80 MeV gamma-ray cascade in Zn68 have been measured. The Legendre polynomial expansion coefficients are determined to be A2=−0.237±0.056 and A4=0.39±0.062. The measured correlation establishes the spin sequence to be 2–2–0, with a quadrupole-dipole mixing ratio δ of −(4−2+3) for the 0.80 MeV gamma-ray. The results of the angular correlation work together with the allowed nature (logft=5.7) of the electron capture decay to the 1.88 MeV level fix the spin and parity of this level to be 2+. The results are consistent with the systematics given by Sakai for low excited of even states of even-even nuclei.View full abstractDownload PDF (944K) -
Takuji Yanabu, Sukeaki Yamashita, Teruo Nakamura, Kunio Takamatsu, Aki ...1962 Volume 17 Issue 6 Pages 914-920
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe angular distributions have been measured for the eight groups of alpha particles leading to the ground state and the excited states of Mg25 from the reaction Al27(d, α)Mg25 with 14.7 MeV deuterons, by using a semiconductor detector of p-n junction. The differential cross-sections of the reactions leading to the single levels of Mg25 are compared with a formula obtained from the two-nucleon pick-up theory. The experimental angular distribution for each alpha group with a comparatively large cross-section is in agreement, at least in forward angle, with the theoretical curve. The alpha group leading to the 3.40 MeV level of Mg25 is considered to come from the transition to the 9⁄2+ state rather than to the 3⁄2− state. The total cross-sections for the levels of Mg25 corresponding to the same K-band 5⁄2+ as that of the ground state of Al27 are larger than the others.View full abstractDownload PDF (680K) -
Yoshiichi Fukuda, Kazuhiko Yoshida1962 Volume 17 Issue 6 Pages 920-923
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSUsing the moment method, the frequency spectrum of lattice with short range order is calculated. It is shown that the spectrum of the lattice comes to resemble the spectrum of the ordered lattice as the short range order increases.View full abstractDownload PDF (360K) -
Hiroo Toyoda, Masayuki Itakura1962 Volume 17 Issue 6 Pages 924-931
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe effect of electrode materials and atmospheres on the polarization reversal and the electrical conduction of barium titanate single crystals were investigated. It was revealed From d. c. conduction measurements that evaporated indium and tellurium metals give an ohmic and a blocking contacts, respectively. It was found that the switching rate under the application of sinusoidal field is primarily determined by the anode substance and that the indium electrode markedly slows down the rate. The polarization reversal of the crystals with evaporated gold electrodes is affected considerably by atmosphere. The switching rate was decreased by evacuation and increased by the adsorption of polar molecules. The switching behavior was determined by the atmosphere in contact with anode. The condition to bring about a sharp switching required at least one blocking contact so biased that the carriers were easy to flow across it. The mechanism is discussed.View full abstractDownload PDF (1012K) -
Kazuo Kanematsu, K\={o} Yasukochi, Tetuo Ohoyama1962 Volume 17 Issue 6 Pages 932-936
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe susceptibilities of Co1.67Ge and Ni1.67Ge are nearly independent of temperature, and the values are 4.9×10−6 and 0.4×10−6 emu/g respectively. From the magnetic measurement on a series of alloys of (Co, Ni)1.67Ge, it is concluded that these alloys are of Pauli paramagnetism. The density of states is calculated as a function of energy, and then the effective mass ratio is estimated on the basis of the free electron theory. The ratio m*⁄m is about 28 for cobalt rich side, and 5 for nickel rich side. Therefore the magnetism of Co1.67Ge and Ni1.67Ge may be ascribed to the Pauli paramagnetism of 3d holes and 4s electrons respectively. These conclusion is consistent with a theory previously proposed.View full abstractDownload PDF (652K) -
Rinjiro Ando1962 Volume 17 Issue 6 Pages 937-940
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSDielectric constant, thermal expansion coefficent, dc resistivity, and pyroelectric current of KLiSO4 were measured in the temperature range covering its transition point. The former three quantities revealed anomalies at the transition point and the temperature hysteresis of about 10°C was observed. The D-E curve showed no anomaly and the reversion of the pyroelectric current by the dc poling was not observed. It is concluded that the crystal is polar but not ferroelectric.View full abstractDownload PDF (476K) -
Hideo Nukushina1962 Volume 17 Issue 6 Pages 941-949
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe space-charge layer width and the junction capacitance of a hyper-abrupt p-n junction were studied, especially on the characteristics of temperature-dependence. The solution of Shockley’s equation in space-charge case gives a fairly good approximation of the characteristics of such a junction. The temperature dependence of the space-charge layer width can be explained mainly by the change in the built-in barrier voltage. However, there still remains a tendency that, at higher temperature, the space-charge layer width is narrower than that of the expected magnitude.View full abstractDownload PDF (1080K) -
Kin-ichi N\={o}ga1962 Volume 17 Issue 6 Pages 950-961
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe field emission microscope has been used to investigate the state of adsorption of barium oxide molecules deposited on tungsten by evaporation. Precautions are taken so as to keep the tube pressure at ultra high vacuum. Pulse method is adopted to protect the state of adsorption from changing with steady application of intense fields.
Surface migration of adsorbed molecules over the entire surface is pronounced only above 700°C and its activation energy is about 4.6 eV.
Work function decreases very rapidly for the first 0.15 layer with the rate which can be explained quantitatively by considering the adsorbed molecules as oriented dipoles. The mean dipole moment of an adsorbed molecule is estimated to be (13.5±8.1)×10−18 esu. Crystallites of barium oxide are formed when covering factor amounts to about unity.
Chemical reaction takes place between barium oxide and tungsten for temperatures above 800°C and the reaction product persists stably unless temperature is raised above 1000°C. The activation energy of the reaction is about 3.3eVView full abstractDownload PDF (1936K) -
Eiji Nakamura1962 Volume 17 Issue 6 Pages 961-966
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSDielectric constants and loss tangents of NaNO2 and (Glycine)3·H2SO4(TGS) single crystals have been measured at 3.3 kMc/s by the resonant cavity method from room temperature to 200°C for NaNO2 and to 80°C for TGS. Dielectric constants measured along the b-axes of the both crystals at 3.3 kMc/s are smaller than those at 1 Mc/s. No dielectric dispersion has been observed along the a- and c-axes of NaNO2. Dielectric constants along these axes increase monotonically with temperature. The mechanisms of the dielectric dispersion of the both crystals are discussed in connection with their spectroscopic properties and crystal structures.View full abstractDownload PDF (700K) -
Yukuo Kataoka1962 Volume 17 Issue 6 Pages 967-969
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSSilicon films have been formed by the method of vacuum evaporation. The nature of the films has been observed by the studies of the effect of heat-treatment on resistivity, Hall mobility and X-ray diffraction.
Silicon was deposited on fused quartz substrates held at a certain temperature between 950°C and 1050°C. The films were generally subjected to heat-treatment after the deposition.
The films as deposited were generally p-type, but the films made with the heat-treatment were converted to n-type.
This tendency was ascribed to the boundary effects of crystallized particles or aggregations in the layer.View full abstractDownload PDF (404K) -
Hajimu Kawamura, Masakazu Fukai, Yoshikazu Hayashi1962 Volume 17 Issue 6 Pages 970-974
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe experiment on cyclotron resonance of electrons in nearly intrinsic n-type germanium with donor concentration of 7×1012 cm−3 was made at 1.6°K, making use of 6 mm microwave. The line shape as well as line width was measured as a function of power of microwave. For relatively high power (more than ten microwatts) the line width increases as (P⁄m*)1⁄2,5, where P is the microwave power and m* is the mass along the direction of microwave electric field. The line shape is like Gaussian for higher power, while for low power it is Lorentzian. These facts were reasonably interpreted in term of rise of effective electron temperature due to the microwave absorption.View full abstractDownload PDF (564K) -
Ryogo Kubo1962 Volume 17 Issue 6 Pages 975-986
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe level spacing of quantized electronic states becomes fairly large in very fine particles. For instance, it will be comparable to kT at T=1°K if the linear dimension of a particle is 50 Å or so. Thermal properties may show considerable deviations from the normal bulk values for such fine particles. The heat capacity will be reduced to about two-thirds and the paramagnetic susceptibility may be enhanced. Even more important effects are expected for relaxation processes. They are discussed briefly, but more detailed treatments will be given in a forth-coming paper.View full abstractDownload PDF (1132K) -
Yutaka Toyozawa1962 Volume 17 Issue 6 Pages 986-1004
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe co-operative effect of electron correlation and random lattice in the impurity conduction of semiconductors is investigated in terms of the Green’s function with in the frame-work of Hartree-Fock approximation. There appear magnetic states embedded in the metallic impurity band, being located at those impurity sites which are relatively isolated from other sites. The fraction of these magnetic sites is estimated to be of the order of ten percents, being a decreasing function of impurity concentration. The magnetic moment of the localized spin is calculated with a method which is different from the conventional one. Treating the localized spins as collective modes which act upon the individual electrons of the impurity band as potential fluctuation (in space and in time), we have calculated the effect of magnetic field or spin ordering on the electrical resistivity.View full abstractDownload PDF (2348K) -
Akira Yanase1962 Volume 17 Issue 6 Pages 1005-1011
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe time decrease of the magnetic permeability after demagnetization, so called disaccommodation, was observed for Ni–Zn ferrite, which had various degrees of oxidation. The effect of the existence of Fe2+ ion in disaccommodation was detected. Fe2+ facilitates the diffusion of cation and makes the disaccommodation rapid. Moreover, it was concluded that the induced anisotropy caused by the preferential occupation of cation vacancies is large enough to explain the disaccommodation in ferrite. The existence of some difference in diffusion rates among the constituent cations is necessary to explain the disaccommodation in ferrite.View full abstractDownload PDF (812K) -
Kazuo Ôno, Atsuko Ito1962 Volume 17 Issue 6 Pages 1012-1017
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSMössbauer absorption by Fe57 in α-Fe2O3 has been measured as a function of temperature from 100°K to 1050°K. In the hyperfine spectra, a steep change of the energy shift ε due to quadrupole interaction was found at about 260°K. The ratio of ε at 100°K to that at 300°K is −2.0±0.4. This value corresponds to the ratio of (3cos2θ−1) below and above the transition temperature, if we assume that the direction of the principal axis of the electric field gradient at the iron nucleus is parallel to the c axis.
A careful observation of the shape of the absorption line near the transition temperature showed that each line consisted of doublet respectively. This fact reveals that the transition temperature of α-Fe2O3 used in the present experiment varies locally from 220°K to 270°K. The value of e2qQ obtained at about 260°K is (+0.084±0.008) cm/sec=(+9.7±,0.9) Mc/sec. Although there were fairly large errors in the obtained values of e2qQ, thefild gradient seemed to increase slowly with temperature from 100°K to 700°K. Theabrupt increse of the field gradient was found near the Néel temperature. The observed temperature dependence of the internal magnetic field was fairly consistent with the molecular field theory for S=5⁄2.View full abstractDownload PDF (804K) -
Shunji Shirai, Yoshiichi Fukuda1962 Volume 17 Issue 6 Pages 1018-1021
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSUsing a model of an oriented f.c.c. metal deposited on the (001) plane of some f.c.c. metal, the conditions under which the (001) or (111) oriented overgrowth takes place are studied theoretically in terms of the forces due to the deposit and substrate atoms. The forces are assumed to be of the Lennard-Jones type. The theoretical result is in a fairly good agreement with the experimental one.View full abstractDownload PDF (448K) -
Masao Kuriyama, Sukeaki Hosoya1962 Volume 17 Issue 6 Pages 1022-1029
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe atomic scattering factors of manganese and oxygen atoms in manganous oxide (MnO) were determined by measuring the integrated x-ray intensities of reflections from powder sample at room temperature. The intensities measured on a relative scale for five differently colored samples within an experimental error of ±0.4 to 4% were transformed to the absolute values by experimental scaling factors. The atomic scattering factors obtained were compared with those calculated by Watson and Freeman and by Suzuki and proved that the atoms were in the state of divalent ions. The tabulated anomalous dispersion terms were found to be reliable for Cu and Cr Kα radiations.
The effect of non-spherical charge distributions was discussed by a comparison between the experimental and the theoretical factors.
The lattice constant at room temperature was determined to be 4.444±0.001 A and thermal expansion coefficient above the Néel point, 1.1×10−5 deg−1. The root mean square amplitudes of thermal vibration were determined to be 0.12±0.03 A (BMn=0.38 A2) and 0.13±0.03 A (Bo=0.45 A2), respectively fir Mn and O ions.View full abstractDownload PDF (1628K) -
Sadae Yamaguchi, Denjiro Watanabe, Shiro Ogawa1962 Volume 17 Issue 6 Pages 1030-1041
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSIt has been confirmed by electron diffraction that anti-phase domains in Cu3Au giving rise to diffuse superlattice reflections grow up during isothermal annealing below the transition temperature of order-disorder, evaporated films of nearly stoichiometric compositions being used. This fact means that anti-phase domains in Cu3Au are not in an equilibrium state unlike the so-called periodic anti-phase structure.
Electron-microscopic images of domain boundaries of alloy films with 26 atomic per cent gold have been observed. These images also confirm the isothermal growth of domains. The irregular configuration of domain boundaries as observed by Fisher and Marcinkowski in electropolished specimens of Cu3Au has been confirmed also in the evaporated films. It is concluded, however, that some correction should be made on the domain distribution of Cu3Au suggested by these authors, on the basis of dark field images of electron micrographs formed by different kinds of superlattice reflection in the present study. The correct distribution is that in which the occupation of nearest neighbor positions by gold atoms is avoided as far as possible.View full abstractDownload PDF (3952K) -
Kazutake Kohra, Mitsuru Yoshimatsu1962 Volume 17 Issue 6 Pages 1041-1052
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSLattice defects in silicon single crystals are observed using Lang’s technique of X-ray diffraction microscopy. Lattice defects such as dislocations and two-dimensionally extended defects are observed only on one side of a twin boundary which is normal to the growth axis ⟨111⟩. Two-dimensional defect is concluded to be due to stacking fault from the study of the disappearance condition of the image with reflections. Fringe patterns due to stacking fualt is compared with the one due to a twinplane. The effect of heat-treatment on stacking faults are studied.View full abstractDownload PDF (4720K) -
Kanefusa Gotoh1962 Volume 17 Issue 6 Pages 1053-1061
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe present paper deals with the magnetohydrodynamic stability of laminar viscous flow between two rotating concentric circular cylinders in the presence of a circular magnetic field. Assuming that the difference between the radii of the inner and the outer cylinders is small compared with their arithmetic mean, the condition for the onset of instability is obtained. It is also found that in a special case when 4πνμσ=1, a simple relationship exists between the eigenvalues in magnetic and non-magnetic cases for arbitrary values of the amplification factor.View full abstractDownload PDF (812K) -
T. Satyavati, P. Jayarama Reddy, S. V. Subrahmanyam1962 Volume 17 Issue 6 Pages 1061-1064
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSUltrasonic velocity and adiabatic compressibility have been studied as a function of composition for the systems: NaNO3–Sr(NO3)2–H2O; KNO3Sr(NO3)2–H2O, KCl–NaCl–H2O; Pb(NO3)2–Sr(NO3)2–H2O; KNO3–Pb(NO3)2–H2O, NaNO3–Pb(NO3)2–H2O; CdCl2–KCl–H2O; ZnCl2–KCl–H2O; CdBr2–KBr–H2O; ZnBr2–KBr–H2O; CdI2–KI–H2O; ZnI2–KI–H2O; CdCl2–ZnCl2–H2O and CdBr2–ZnBr2–H2O. The first six systems containing simple electrolytes like NaCl, KCl and NaNO3 showed ideal behaviour i.e. linear variation of the compressibility and velocity. Solutions of cadmium halides and zinc halides in aqueous solutions of potassium halides are characterised by positive excess compressibility at a mole fraction of 0.666 of the potassium halide. This behaviour has been explained as due to the formation of complex ions of the type ZnX4−− and CdX4−−.View full abstractDownload PDF (488K) -
Kunisuke Asayama, Junkichi Itoh1962 Volume 17 Issue 6 Pages 1065
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Shunsuke Kobayashi, Masaharu Aoki1962 Volume 17 Issue 6 Pages 1066-1067
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Kazuo Kawabe1962 Volume 17 Issue 6 Pages 1067
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Shigeru Waku1962 Volume 17 Issue 6 Pages 1068-1069
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Hiroshi Ohkura, Sei-ichi Nagata1962 Volume 17 Issue 6 Pages 1069-1070
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Takasi Ono, Teizo Takahama, Taizo Irie1962 Volume 17 Issue 6 Pages 1070-1071
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
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Hiroshi Yasuoka, Akira Hirai, Motohiro Matsuura, Tsuneo Hashi1962 Volume 17 Issue 6 Pages 1071-1072
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Keizô Aoyagi, Makoto Sugihara1962 Volume 17 Issue 6 Pages 1072-1073
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Shin-ichi Matsuoka, Shuzo Hattori1962 Volume 17 Issue 6 Pages 1073-1074
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Shozo Ino, Denjiro Watanabe, Shiro Ogawa1962 Volume 17 Issue 6 Pages 1074-1075
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Shigeko Miyamoto, Shin-ichi Nakashima, Hiroyuki Mizuno1962 Volume 17 Issue 6 Pages 1076
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Hideo Suzuki1962 Volume 17 Issue 6 Pages 1077
Published: June 05, 1962
Released on J-STAGE: June 01, 2007
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Akira Tsujimura, Tadamiki Hihara, Yoshitaka K\={o}i1962 Volume 17 Issue 6 Pages 1078
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Keigo Nisimura1962 Volume 17 Issue 6 Pages 1079C
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe scales of the ordinates in Figs. 3a, 3b and 3c should be doubled, i.g. “4” in the scales should be read “2”. Line 19 of the right column, page 2100, “94mb” should be read “64mb”.View full abstractDownload PDF (20K) -
Shoji Tauchi1962 Volume 17 Issue 6 Pages 1079A
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
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Tsuyoshi Murao1962 Volume 17 Issue 6 Pages 1079B
Published: June 05, 1962
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Makoto Kikuchi, Yutaka Abe1962 Volume 17 Issue 6 Pages 1079D
Published: June 05, 1962
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe lowest picture in Fig. 3(b) should be rotated 180°.View full abstractDownload PDF (16K)
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