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Charles Thompson
1965 年 20 巻 3 号 p.
297-302
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The effect of the J=2,
T=0, π–π interaction on the π–
N invariant amplitude
B(+) is analyzed. It was found that the π–
N scattering data is inconsistent with a
J=2,
T=0, π–π phase, due to δ
20, which rises To above 13° around 650 MeV. From the data it is impossible to say whether the results correspond to a resonant phase or only a sharp peak in the corresponding absorptive part of the amplitude.
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Sadayuki Kato, Tadashi Kifune, Yoshitaka Kimura, Masaaki Kobayashi, Ku ...
1965 年 20 巻 3 号 p.
303-307
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The interference effects in the production of bremsstrahlung in a silicon single crystal have been studied by using 720 MeV electrons. The energy spectrum of the bremsstrahlung has exhibited interference maxima of the first five orders. The intensity variation of the 150 MeV photons with the rotation of the crystal has shown also three interference Maxima on each side of the central minimum. The observed interference conditions for the photon energy and angles of incidence of electrons relative to crystal axes are in good agreement with the theory.
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Ryosei Uno
1965 年 20 巻 3 号 p.
308-319
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
X-ray reflection intensities were measured with a diffractometer on Powder specimens of NiO, CoO and MnO, of particle size less than about 5 μ with MoKα ,CuKα FeKα and CrKα. By a scaling procedure, the absolute values of the experimental structure factors were derived. The temperature factors of individual ions were estimated by three dimensional difference Fourier syntheses. The factors obtained were B
Ni=0.63 Å
2 and B
O=0.41 Å
2 for NiO, B
Co=0.52 Å
2 and B
O=0.48 Å
2 for CoO and B
Mn=0.88 Å
2 and B
O=0.66 Å
2 for MnO. It is found that the electron Distribution in the three oxides is very similar to each other, and that the electron density near the center of [111] direction is smaller beyond the limit of experimental errors than that of the theoretical calculations for the spherical free ion.
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Yasuji Kashiwase
1965 年 20 巻 3 号 p.
320-335
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
Contributions of anharmonic vibration to the Debye-Waller factor and the intensity of
X-ray diffuse scattering were calculated for polyatomic crystal by the quantum statistics. Applying the anharmonic parameters which were obtained in the theory of specific heat, the contribution to the temperature factor and the intensity of diffuse scattering were estimated numerically for ionic crystals. From the comparison between the results of calculation and experiments, it was made clear that most parts of anharmonic effect arise from the thermal expansion, although cubic And quartic anharmonic contributions are noticeable for KCl at high temperatures. The effect of anharmonicity was investigated at absolute zero degree in ionic crystals.
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Fumio Hashimoto
1965 年 20 巻 3 号 p.
336-346
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The changes of resistivity during isothermal aging after quenching were measured in Al-0.72wt%Ag, Al-3.0wt%Ag binary alloys, Al-3.0wt%Ag-0.10wt%Ge, Al-3.0wt%Ag-0.01wt%In and Al-3.0wt%Ag-0.01wt%Sn ternary alloys and the interaction between a vacancy and an Ag atom was studied. General features of clustering in these ternary alloys were not different from those in Al-3.0wt%Ag binary alloy. Therefore, the binding energy between a vacancy and an Ag atom could be obtained by taking the ratio of time,
tMt, required to reach the maximum of electrical resistivity in ternary alloys with that time,
tMb, in binary alloy and using the already known binding energy between a vacancy and a second solute atom. Binding energy between a vacancy and an Ag atom was estimated to be 0.25±0.05 eV.
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Ichiroh Nakada
1965 年 20 巻 3 号 p.
346-350
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
The absorption spectrum of anthracene single crystal was measured in the range from 3950 A to 4400 A, i. e., the long wave-length tail of
A1g–
B2u transition. For the change of temperature from −180°C to 80°C, the absorption increases markedly both for a- and b-polarized light. The contour in the absorption tail can be separated into two parts. The one is the absorption obeyed to the Urbach rule, and the other is the absorption due to the transition from the hot level in the ground state to the first excited state. In the former absorption at a temperature Range above −80°C, the constant values of σ in the Urbach formula are obtained; 1.68 in a-polarized light and 0.88 in b-polarized light. In the latter absorption, the peaks at 4125 A and 4145 A were observed with a- and b-polarized light, respectively. The common thermal activation energy of 0.16 eV is obtained.
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Yamichi Ohmura
1965 年 20 巻 3 号 p.
350-353
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The specific heat of InSb was measured over the temperature range Between 6 and 100°K. The Debye characteristic temperature curve shows a minimum at about 13°K in agreement with the prediction of Fray
et al. Analysis by the method of Thirring-like expansion gives
Θ∞=250±5°K which is much smaller than the equivalent temperature 283°K of the maximum frequency of lattice vibration (197 cm
−1, in wave number unit), compared with the cases of Ge and Si. It is pointed out that the anharmonic effect is relatively large even in low temperature region.
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Yoshiichi Fukuda
1965 年 20 巻 3 号 p.
353-358
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
By using a network model, the effects on the band structure of two-dimensional graphite due to localized perturbations are studied. The density of states near the Fermi energy is considerably modified by such perturbations. In the case of attractive perturbation, the density of states above the Fermi energy is increased and the density of states below the Fermi energy is slightly decreased. In the case of repulsive perturbation, the reverse is the case.
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Kohzoh Masuda, Jiro Yamaguchi
1965 年 20 巻 3 号 p.
359-363
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The conduction mechanism of α, α′-diphenyl-β-picrylhydrazyl (DPPH) single crystal is studied by measuring electric conductivity, magneto-resistance, ESR etc. Moreover, the electric conductivity is theoretically given by the following equation,
σ=
Aθn(
e2d2J⁄
hkT)exp(−
EJ⁄
kT)
which is based on the hopping of unpaired electrons in DPPH molecule, and the theoretical value shows good agreement with the experimental value.
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Masaharu Inoue, Yutaka Toyozawa
1965 年 20 巻 3 号 p.
363-374
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
A new method of investigating energy band structure is proposed which makes use of the angular dependence of two-photon absorption coefficient of polarized beams. The angular dependences of the allowed transitions are calculated and tabulated for 32 crystal point groups. The exciton as well as interband transitions are discussed, and the method will be explained for the cases of NaCl–, CsCl–, ZnS– and diamond-type crystals how to determine the points of extremum vertical energy separation in the Brillouin zone with the help of associated tables and figures.
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Y. H. Ohtsuki
1965 年 20 巻 3 号 p.
374-380
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The part of absorption coefficients of X-rays arising from the phonon excitations is calculated quantum mechanically. When the polarization vectors of the incident X-rays are in the diffraction plane, and are parallel to the direction of diffracted wave, the cross terms of the direct phonon and the photoelectric excitations mainly contribute to the
h-wave absorption coefficient (i.e.
h-component of the absorption coefficient in the two-wave approximation). It is also concluded that the direct phonon excitation could be significant near the absorption edges.
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Makoto Hirabayashi, Sadao Hoshino, Kikuji Sato
1965 年 20 巻 3 号 p.
381-388
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
It is evidently shown by neutron diffraction that the alloy Cu
2NiZn forms the long range order after prolonged annealing at 300°C. The observed structure factors of the superlattice reflections with mixed indices are evaluated to be between 0.29 and 0.33×10
−12 cm. Three structure models, whose unit cells are based upon the original face centered cubic cell containing four atoms, are proposed to interpret the experimental results. A good agreement between the observed and calculated structure factors is found in the following model, i. e., a nickel atom is at the origin, and a zinc and two copper atoms are statistically distributed at the three positions (1/2, 1/2, 0, (
Remark: Graphics omitted.)). Possibility of other two models is also discussed on the basis of the present investigation as well as other physical properties.
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Toshinosuke Muto, Syoiti Kobayasi, Hiroko Hayakawa
1965 年 20 巻 3 号 p.
388-395
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
By making use of the result obtained in Part I, the numerical calculation of
A in ω=
A·
Md(
T) of Fe
57 in ferromagnetic iron has been carried out and the calculated value of
A is found to become 1.4
7∼1.9
4×10
5 gauss
−1 sec
−1, corresponding to the assumed values, ranging 2 to 1 of η, i.e., the amount in percentage of the admixture effect which is generally expected to be a few percent or less. The comparison with the observed value, i.e.,
A=1.67×10
5 gauss
−1 sec
−1 at
T=0 for Fe
57 in ferromagnetic iron seems to be quite satisfactory. It shoud be remarked that the more or less spreaded, atomic orbitals of 3
d-electron within the crystal compared with the Hartree-data of an isolated Fe atom may give favourable results for the nuclear magnetic resonance frequency of Fe crystal. The hyperfine field felt by Fe
57 nucleus within the ferromagnetic Fe has also been calculated to become
Hhy=−3.0∼−3.9×10
5 Oe at
T=0, which agree remarkably well with the observed values of −3.39×10
5 Oe by the nuclear magnetic resonance method and of −3.33×10
5 Oe by the Mössbauer-type experiment.
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Masao Shimizu, Atsushi Katsuki, Hideji Yamada
1965 年 20 巻 3 号 p.
396-401
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
A calculation on the temperature variation of the magnetization for Ni metals performed by the Stoner theory, by making use of the density of states curve which was determined from low temperature specific heat data. The effective exchange energy is expanded as a power series of the magnetization,
M, and the values of coefficients are estimated from the comparison between calculated and experimental results of the
M vs
T curve. In order to explain the experimental results for the temperature variation of
M in Ni metal, the terms of the higher power of
M than the quadratic term in the exchange energy must be taken into account. Our density of states curve is not similar to the normal band used by Stoner and the rectangular band used by Wrohlfarth, nevertheless the calculated results for the temperature variation of
M are similar to each other. It is shown that there is a Possibility that a first order transition of magnetization occurs.
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Masayasu Ueta, Takenari Goto
1965 年 20 巻 3 号 p.
401-411
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
Very narrow lines and abroad band have been observed in emission with the excitation into the band to band region or the exciton absorption band. Narrow emissions consist of a strong 3901 Å, a weak 3870 Å and a very weak 3785 Å lines at 4°K. They are attributed to the
n=1 Stokes,
n=1 and
n′=1 resonance exciton emissions, respectively.
n=1 and
n′=1 are the first members of the sharp and the diffuse absorption line-series. A broad emission consists of two bands peaking at 4030 and 4250 Å. The former emission band has an asymmetric shape and is ascribed to the annihilation of a trapped exciton. From the temperature dependence of the emission intensity and the photoconductivity, the discussion is given on the emission processes.
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Satoru J. Miyake
1965 年 20 巻 3 号 p.
412-422
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
Line broadening of cyclotron resonance is treated theoretically assuming the radius of cyclotron orbit to be smaller than the force range of impurity potential. The impurity potential causes adiabatic change of The cyclotron frequency and non-adiabatic transitions. The modulation of the frequency due to electron motion is treated for the case of slow modulation as well as for that of rapid modulation. The validity of statistical theory and impact theory Is discussed. The non-adiabatic effect is shown to be small in the case under consideration.
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V. D. Gupta, A. K. Gupta
1965 年 20 巻 3 号 p.
423-427
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
A Markoff chain model to describe the structure of semi-crystalline Polymers is presented. It consists of a random walk on a square lattice. The crystalline region is characterized by a preferred walk whereas the amorphous region by a random walk. The steps of the walk are identified with the bond vectors of the chain and its progress is governed by a transition probability matrix. Expression for the expected square of the end-to-end distance is derived in terms of two probability parameters
p and α. The mathematical methods of Markoff chains are used. The Extension of the model to account for the modern ideas of chain folding In the single crystals of polymers is suggested. The problem of excluded volume is excluded.
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S. Datta Majumdar, S. Sen Gupta
1965 年 20 巻 3 号 p.
428-431
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
A simple and uniform treatment is presented for eliminating the angular variables from the
n-particle Schrödinger equation and for deriving the Hamiltonian of polyatomic molecules in a form suitable for a perturbation calculation. The Hamiltonian is first set up conveniently in a special set of rotating axes. Introduction of three pseudo-momenta, which correspond to no coordinates, greatly simplifies the calculation and makes it unnecessary to evaluate the Jacobian of the transformation, The Hamiltonian so obtained can be directly used to eliminate the angular variables. For the molecular problem it is found necessary to pass on to some other rotating frame in which the coupling between rotation and vibration becomes sufficiently small. A method for doing this is discussed in the last section.
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Masatake Mori, Hiroshi Fujita
1965 年 20 巻 3 号 p.
432-437
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
Approximate formulas for some basic quantities concerning the transition between a discrete state and the continuum in collision problems are given with some estimate of the error. As to the matrix of the interaction it is assumed that only the elements corresponding to the transition between the discrete state and the continuum have non-zero values.
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Kunitaka Kondo, Koichi Shimoda
1965 年 20 巻 3 号 p.
437-442
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The magnetic hyperfine structure of the
J=3,
K=2 line in the inversion spectrum of N
14H
3 has been studied by means of a molecular beam maser spectrometer. The results are analyzed by assuming (
I·
J) type interactions of the protons and nitrogen spins, and by taking the coupling scheme of angular momenta
F2=
I+
J,
F=
IN+
F2. The observed hyperfine structure shows two satellite lines on each side of the central line, corresponding to the transitions with
ΔF2=0,
ΔF=±1, and
ΔF2=
ΔF=±1. From the frequency measurements of these satellite lines the coupling constants of the (
I·
J) interactions are determined to be −17.67±0.3 kc for the protons, and 6.73±0.04 kc for the nitrogen nucleus. The theory predicts that the hyperfine components with
ΔF2=0,
ΔF=±1 consist of two groups of lines separated by abut 7 kc, while the experiments show that the separation is smaller than 4.5±0.5 kc. Effects of other types of interactions are taken into consideraction, but they give no appropriate interpretation of the discrepancy.
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K. Kato, K. Matsuura, M. Yoseli
1965 年 20 巻 3 号 p.
443-448
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
Plasma ion oscillations have been studied in a plasma produced by hot-cathode, mercury-vapour discharge, at a pressure of about 1 μHg. A super-heterodyne detector and a movable probe were employed to observe frequency spectra at different points in a small tube having plane electrodes.
The frequencies of the self-sustained plasma ion oscillations were markedly dependent on the position in the tube, and the frequencies of the ion oscillations on the inside of a beam were lower than that on the outside.
In order to explain our observation, a simple theory of plasma ion oscillation in a plasma-beam system is proposed.
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Jiro Nishimura, Syoten Oka
1965 年 20 巻 3 号 p.
449-453
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
A theoretical investigation is made on the steady axisymmetric flow of an incompressible viscous fluid through a taperared tube. The velocity field is expanded into inverse powers of
r, the distance from the virtual vertex of the conical tube, and the equations for the coefficient functions are solved successively. Distributions of the velocity, the pressure and the stress are determined to the second approximation, the first being the results obtained with the Stokes approximation. The flux of the flow per unit time is also calculated and shown to agree with that obtained with the Stokes approximation.
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Ko Tamada, Tosio Miyagi
1965 年 20 巻 3 号 p.
454-456
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
The flow of viscous fluid past a tangential flat plate is studied to Oseen’s approximation with special reference to the flow around the trailing edge of the plate. Bairstow-Cave-Lang integral equation is solved asymptotically for large Reynolds numbers and for the trailing edge region by making use of singular perturbation technique. The analysis confirmed the uniform validity of the classical solution of Piercy-Winny over whole region including the trailing edge.
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R. V. Joshi, A. K. Menon
1965 年 20 巻 3 号 p.
457
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Hiroshi Tanaca, Mikiko Hagi
1965 年 20 巻 3 号 p.
458
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Hiroshi Tanaca, Mikiko Hagi
1965 年 20 巻 3 号 p.
459
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Katsue Hasegawa, Susumu Yoshimura
1965 年 20 巻 3 号 p.
460-461
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Yasuji Kashiwase, Yoshiro Kainuma
1965 年 20 巻 3 号 p.
461
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Shigetoshi Tanaka, Hiroshi Kubo, Kenji Mitani
1965 年 20 巻 3 号 p.
462
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Yasuwo Fujishiro, Hiroji Mitsuhashi
1965 年 20 巻 3 号 p.
463-464
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Masahiko Hasegawa, Ichiro Tsuboya
1965 年 20 巻 3 号 p.
464
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Mitsuhiro Motokawa, Muneyuki Date
1965 年 20 巻 3 号 p.
465
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Ryumyo Onaka, Atsuo Fukuda, Teruhiko Mabuchi
1965 年 20 巻 3 号 p.
466
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Koshichi Noto, Yoshio Muto, Tadao Fukuroi
1965 年 20 巻 3 号 p.
467
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
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Fumiko Nakazawa, Hiroshi Kanzaki
1965 年 20 巻 3 号 p.
468-469
発行日: 1965/03/05
公開日: 2007/06/01
ジャーナル
認証あり
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Yutaka Sugita, Hideo Fujiwara, Nobuo Saito
1965 年 20 巻 3 号 p.
469-470
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Susumu Takeda, Ryosuke Matsuoka
1965 年 20 巻 3 号 p.
470-471
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Kazuo Miyatani, Kay Kohn, Sh\={u}ichi Iida, Hiroshi Kamimura
1965 年 20 巻 3 号 p.
471-472
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり
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Yung-Kwon Sung, Yoshio Inuishi
1965 年 20 巻 3 号 p.
472-473
発行日: 1965/03/05
公開日: 2007/05/29
ジャーナル
認証あり