All issues
Volume 22 (1967)
- Issue 6 Pages 1311-
- Issue 5 Pages 1127-
- Issue 4 Pages 949-
- Issue 3 Pages 685-
- Issue 2 Pages 355-
- Issue 1 Pages 1-
Predecessor
- Proceedings of the Physico-Mathematical Society of Japan. 3rd Series
- Proceedings of the Tokyo Mathematico-Physical Society. 2nd Series
- Tokyo Sugaku-Butsurigakukwai Kiji-Gaiyo
- Tokyo Sugaku-Butsurigakkwai Hokoku
- Tokyo Sugaku-Butsurigaku Kwai Kiji
- Tokyo Sugaku-Butsurigaku Kwai Kiji
- Tokyo Sugaku Kaisya Zasshi
Volume 22, Issue 2
Displaying 1-50 of 64 articles from this issue
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Eizo Tajima, Minoru Adachi, Tadayoshi Doke, Shinzou Kubota, Masahiro T ...1967 Volume 22 Issue 2 Pages 355-360
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe spectrum of the cosmic ray produced neutrons was measured between 1 ahd 10 MeV as a function of altitude. The detectors used were organic liquid scintillators to which a pulse shape discrimination technique was applied to select pulses of recoil protons. The proton spectrum was converted to the neutron spectrum by making use of response function of the detectors. The best fit of the neutron spectrum between 2 and 10 MeV is φn(En)=0.30exp(−0.0046x)En−0,77−0,0010x neutrons/cm2 sec. MeV, where x is an altitude in g/cm2. The flux of neutrons of the same range of energy is dependent on altitude as exp(−0.0063x) in a good approximation.View full abstractDownload PDF (704K) -
Hiroyasu Ejiri1967 Volume 22 Issue 2 Pages 360-367
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSComparison of negatron decays with positron decays is made for allowed GT type transitions from the ground 1+ states in odd-odd nuclei to the ground 0+ and first 2+ states in even-even nuclei. The ft values of negatron decays are systematically larger than those of positron decays by factors 2∼12. The difference between logft values of negatron decays and positron decays is discussed in terms of the theoretical effective coupling constant geff and the pairing model.View full abstractDownload PDF (920K) -
Shinsaku Kobayashi, Hiromichi Kamitsubo, Kenji Katori, Akira Uchida, M ...1967 Volume 22 Issue 2 Pages 368-378
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSIn order to obtain a direct measure of the strength and form of the nuclear spin-spin interaction, the transmission of 0.92 MeV polarized neutrons by polarized 165Ho was measured. The total cross section and relative scattering angular distribution of 0.92 MeV unpolarized neutrons through unpolarized 165Ho nuclei were also measured in order to make a parameter search of the optical potential. The experimental results are analyzed with Davies and Satchler’s DWBA formalism. The results show that the effective spin-spin interaction between a free neutron and a 165Ho nucleus, is an attraction type and its strength has the order of one MeV, and the present experimental result together with other data obtained at ORNL and Stanford, can be fitted by the DWBA approach in either case of a volume and surface type of the form factor. For the further determination of the strength and the form of the spin-spin interaction, more precise similar experiments are needed for various different neutron energies.View full abstractDownload PDF (1372K) -
Eiko Hiroike1967 Volume 22 Issue 2 Pages 379-392
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSElectron coupled proton spin-spin interactions in saturated hydrocarbon molecules. JHH′, are investigated theoretically. The general formula for JHH′ is derived by double perturbation method, in which (Remark: Graphics omitted.) (the Fermi interactions between electrons and proton-spins) and (Remark: Graphics omitted.) (correlations between electrons) are taken as perturbations. The calculation is performed up to first order in (Remark: Graphics omitted.). It is shown that the zeroth order term in (Remark: Graphics omitted.) becomes nearly equal to zero under the approximation, in which energy differences between the ground state and the excited states are replaced by a suitable mean. Therefore, JHH′ calculated by the molecular orbital method without configuration interactions is a part of JHH′, which is different from the one calculated by the valence bond method with the above approximation. The order of magnitudes of the zeroth and the first order term in (Remark: Graphics omitted.) are compared in the case of methane molecule.View full abstractDownload PDF (1276K) -
Michio Matsuzawa, Hiroki Nakamura1967 Volume 22 Issue 2 Pages 392-398
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe cross-section for the exact resonance excitation transfer process H(2S)+H(1S)→H(1S)+H(2S), of which the interaction is a short range one, is calculated at energies of relative motion of 0.03, 0.1, 0.3, 1.0, 3.0, 5.0 and 10.0 eV by the perturbed stationary state method (PSS method). The interaction energies between hydrogen atoms are calculated by the Heitler-London method. The results are in good agreement with the results of the impact parameter method for energies of relative motion over 1.0 eV.
The disagreement below 1.0 eV is due to the presence of the potential barrier in the 3Σg adiabatic potential of the excited hydrogen molecule. The cross-section calculated by PSS method is 33.1π au (atomic unit) at 0.03 eV.View full abstractDownload PDF (740K) -
Takayoshi Amano, Eizi Hirota, Yonezo Morino1967 Volume 22 Issue 2 Pages 399-412
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe molecular constants in the first excited vibrational state of the 32SO radical are obtained as well as in the ground state. The equilibrium constants are much improved; Be=21609.55±0.15 Mc/sec, λe=157780±25 Mc/sec, and re=1.48108±0.00005Å. Spectra of other two isotopic species, 34SO and 33SO, are also analyzed. Hyperfine interaction due to the 33S nucleus is studied in detail, and (Remark: Graphics omitted.), (Remark: Graphics omitted.), (Remark: Graphics omitted.) are obtained. The Stark effect of the 33SO spectra is worked out in detail and utilized for the assignment of the weak lines.View full abstractDownload PDF (1476K) -
Nobuhiro Go1967 Volume 22 Issue 2 Pages 413-416
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSKikuchi’s theory of irreversible cooperative phenomena is extended so as to treat cooperative chemical kinetics. A state distinguished chemically from others (a chemical state) is made up of a number of physically distinguishable states. When probabilities of transitions between states belonging to a same chemical state are large compared with those between states belonging to different chemical states, the path entropy of a heat bath is shown to be
Sb(t,t+Δt)=Const.−ΔFs(t,t+Δt)⁄2T,
where ΔFs(t,t+Δt) is the amount of free energy increase in the system during the time interval Δt, and T is the temperature of the heat bath. This expression of the path entropy of a heat bath can be used in chemical kinetics, since statistical weight parameters of a chemical system are given in a form exp(−βf), f’s are not energies but free energies.View full abstractDownload PDF (428K) -
Nobuhiro Go1967 Volume 22 Issue 2 Pages 416-427
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe kinetics of Zimm-Bragg’s model is studied theoretically. Application is made of the theory which was proposed by Kikuchi and extended to chemical kinetics by the present author, and an exact and closed nonlinear kinetic equation is derived. The equation contains three kinetical parameters θ0, θ1, θ2. Near the equilibrium state the equation is linearized and the relaxation times τ are calculated numerically as functions of s, θ0, θ1, θ2 (σ being assumed to be 2×10−4). A comparison of a relaxation time versus temperature curve, which will be experimentally obtainable, for instance, by the T-jump method, with the theoretical τ–s curves here obtained will enable the determination of a set of values of kinetic parameters θ0, θ1, θ2. The approximation proposed by Vol’kenstein, Gotlib and Ptitsyn is examined and compared with our exact treatment and it is concluded that the approximation is not good.View full abstractDownload PDF (1076K) -
Kazuhiko Itagaki1967 Volume 22 Issue 2 Pages 427-431
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSMeasurement of self-diffusion in ice ⊥(00,1) and ⊥(10,0) were made by a tracer sectioning method using single crystals from Mendenhall Glacier, Alaska. U.S.A.. The activation energies of diffusion D⊥(00,1) and D⊥(10,0) are 0.54eV and 0.65eV respectively. Among the several possible mechanisms the “free interestitial molecule mechanism” is the only mechanism which would give higher activation energy of diffusion along ⊥(10,0) than ⊥(00,1).View full abstractDownload PDF (580K) -
Morikazu Toda1967 Volume 22 Issue 2 Pages 431-436
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSVibration of a chain of particles interacting by nonlinear force is investigated. Using a transformation exact solutions to the equation of motion are aimed at. For a special type of interaction potential of the form
(Remark: Graphics omitted.)
exact solutions are actually obtained in terms of the Jacobian elliptic functions. It is shown that the system has N “normal modes”. Expansion due to vibration or “thermal expansion” of the chain is also discussed.View full abstractDownload PDF (460K) -
Hisayosi Niu, Masao Shimizu1967 Volume 22 Issue 2 Pages 437-444
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSConcentration dependence of elastic constants for binary alloys with cubic symmetry are calculated by the lattice theory of Born and von Karman. Central forces between nearest are next-nearest neighbors and angular forces only between nearest neighbors are taken account. Atomic force constants for A–B alloys are given by the average of the atomic force constants for A–A, B–B and A–B pairs weighted by the probability of appearance for these pairs. The elastic constants are expressed by the mean atomic force constants and their concentration dependence is given by a quadratic equation of concentration, which is consistent with the experiments for Ag–Au and Cu–Ni alloys. The variation of the Debye temperatures with concentration is calculated by using the calculated elastic constants and its result is compared with the experiments.View full abstractDownload PDF (896K) -
Yukio Mizuno, Yoshihiro Ohmura1967 Volume 22 Issue 2 Pages 445-449
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSInelastic scattering of X-rays by localized electrons, such as K-electrons, in solids is treated theoretically. The wave length of X-rays is chosen to be longer than the orbital radius of localized electrons, but still short enough so that the photon energy is much higher than the ionization energy. On the basis of reasonable approximations, it is found for polycrystals that the differential cross section is proportional to
ν02t(ν0−ν)(1+cos2θ)sin2(θ⁄2).
Here ν0 and ν are respectively the frequencies of the incident and scattered X-rays, θ being the scattering angle. νt(ν) is a quantity proportional to the cross section of absorption of the X-rays with frequency ν by the same electrons. The above expression has recently been confirmed experimentally.View full abstractDownload PDF (672K) -
Yoshihiro Hishiyama1967 Volume 22 Issue 2 Pages 449-456
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe ordinary transport properties of the Cu–Cd, Ag–Zn, Cu–Zn and Cu–Al γ phases have been measured. The results show an anomaly in the e⁄a dependence of the Hall coefficients and thermopowers for each γ phase. Up to present stage, we have no theories which treat these anomaly precisely. On the basis of multi bands model, probable suggestions are proposed. This interpretation does not contradict with the usual image of the electronic structure of the γ phase.View full abstractDownload PDF (768K) -
Sumiaki Nagai1967 Volume 22 Issue 2 Pages 457-462
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe total energy of MnO crystal is calculated on the basis of the Heitler-London approximation by means of the variational method taking the analytical 2p wave function of O−− ion as the variational function. The 2p wave function obtained is compared with other published wave functions. The calculated values of the total energy is −8.012e2⁄aH.
The cohesive energy and the lattice constant of MnO crystal are calculated to be 796 Kcal/mol, 2.275Å respectively, while the observed values are 923 Kcal/mol, 2.217Å respectively.View full abstractDownload PDF (604K) -
Tetsuhiko Tomiki1967 Volume 22 Issue 2 Pages 463-487
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSOptical measurements were carried out on the reflectivity and absorption tails of KCl single crystals over the region 6.0 to 12 ev in the temperature range 10 to 573°K. With use of these data, Kramers and Kronig analysis was made on reflectivity spectra for three different temperatures 10, 78 and 295°K. The analysed spectra of important optical constants are presented in this article, and their properties are discussed in order to clarify the excitonic picture in a single crystalline lattice. The result is analysed along the theories of Toyozawa and Elliot. It was found that the first exciton line shape and the plateau in the higher energy side of the step are explained by them. The two overlapping components of the first band can be well separated at low temperatures in the case of single crystals, and this permits us to determine an oscillator strength for each component as 0.27 and 0.375 for (Remark: Graphics omitted.) and (Remark: Graphics omitted.)-transition, respectively. Attempts were made to express the spectrum by an analytic expression in the first exciton band region.View full abstractDownload PDF (3004K) -
Takenari Goto, Masayasu Ueta1967 Volume 22 Issue 2 Pages 488-498
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSLuminescence and photoconductivity spectra in evaporated films or polycrystals of CuBr have been studied. Relationship between the emission and absorption spectra, leads to the conclusion that the resonance emission is due to the annihilation of an intrinsic exciton of the lowest energy. An emission line similar to I1 in CuCl and other narrow emission lines are found. These are considered to arise from bound excitons. Equidistant structure is observed in emission spectra of some films as well as in an excitation spectrum of the resonance emission. The energy difference between the peaks in the structure is equal to the transversal optical phonon energy. On the basis of various experimental results, a radiative annihilation process of an intrinsic exciton is discussed. From the photoconductivity spectrum, the band gap energy is estimated to be 3.02 eV at 8°K. The thermal activation energy for the dissociation of the lowest energy exciton is obtained as 0.10±0.02 eV from the resonance emission intensity vs. 1/T curve.View full abstractDownload PDF (1888K) -
Kenzaburo Marukawa1967 Volume 22 Issue 2 Pages 499-510
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe characteristic motion of dislocations in copper single crystals of low dislocation density has been studied by etch pitting, especially near yield stress. Dislocations are presumed to be locked at each position in as-annealed crystals. The motion of dislocations due to the application of stress is composed of three processes: (1) unlocking from the as-annealed position, (2) moving at a high speed, e.g. 400 cm/sec at a stress of 22 g/mm2, and (3) stopping at a certain final position depending on the stress level below yield stress. It is considered tentatively that the locking is due to discrete pinning by impurity atoms, and the main obstacles to the dislocation motion are thought to be other locked dislocations. From quantitative studies of each process a possible mechanism of yielding of copper crystals is suggested.View full abstractDownload PDF (3264K) -
Kaizo Nakamura1967 Volume 22 Issue 2 Pages 511-516
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe fundamental absorption spectra of the mixture of KI and RbI are investigated. The first Peak of four prominent exciton absorption bands and the so called interband transition ‘step’ absorption are displaced in parallel each other and almost linearly with the change of composition of the mixture. This means that the binding energy of the first exciton remains constant over the whole concentration range. The second and the third ones above the step reverse their relative intensities at about 20 atomic percent of RbI concentration. The separation between them becomes narrower as the concentration of the dopant is increased, and at about 40 percent of RbI, it amounts to less then 3/4 of those in pure materials. A hump on the low energy tail of the fourth peak becomes indistinguishable at concentration higher than 10 percent of dopants. No new absorption is observed below 7.5 eV. The possible interpretation of the absorption spectra is discussed.View full abstractDownload PDF (876K) -
Yozo Kaifu, Yoshio Kawate, Shigemitsu Nakanishi, Ichihiko Niwa, Katsur ...1967 Volume 22 Issue 2 Pages 517-524
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe fluorescence emission was investigated in single crystal specimens of CuCl at low temperatures. Strong emission lines of instrumentally limitted width are observed at wavelengths in the range of exciton absorption below 20°K. These lines are associated with recombination radiations from free and bound excitons with or without phonon cooperation, and they shift toward higher energy with increasing temperature as are observed in the exciton absorption bands. The average temperature coefficient of all the peak energy at low temperature is +2.5×10−4 eV/°K.
From the temperature dependence of the emission intensity, the activation energies of the various processes are estimated; the ionization energy of the exciton is 0.16 eV and the binding energies of the bound exciton complexes ranged between 0.03 and 0.007 eV.View full abstractDownload PDF (1844K) -
A. Mookherji, T. Mookherji1967 Volume 22 Issue 2 Pages 525-528
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSSpectroscopic pure variety of rare earth sulphates is studied magnetically in aqueous solution by a microbalance specially designed for the purpose. It is observed that the magnetic moments in state of aqueous solution are smaller than those of the crystalline state, opposite of what has been observed with ions of the iron group. It is also observed that the paramagnetic complexes in aqueous solution become less anisotropic than in crystalline state in conformity with the theoretical findings regarding the distortion and shielding of 4f electrons by 5s- and 5p-electron shells.View full abstractDownload PDF (548K) -
Masaru Mita1967 Volume 22 Issue 2 Pages 529-538
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe low power ferromagnetic resonance behavior at room temperature was measured on a magnetically anisotropic material, Zn2Y, with the object of studying relaxation processes on the basis of magnon manifold. The linewidth of monocrystalline Zn2Y under a uniform mode resonance condition exhibits four kinds of maxima with increasing angle θH of the applied dc field with respect to the crystallographic c axis. The first maximum is at θH=0° and is small. The second maximum is the largest and extends over the entire region of θH. The third and fourth maxima are small and attend on the larger angular tail of the second maximum. It may be concluded that the second maximum is due to the two-magnon decay of the uniform mode and the third due to the three-magnon decay of the uniform mode.View full abstractDownload PDF (1228K) -
Masayuki Shiga1967 Volume 22 Issue 2 Pages 539-546
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSMagnetic properties of Fe65(Ni1−xMnx)35 ternary alloys which have the f.c.c. structure over the whole range of x were investigated. It was found that the alloys are antiferromagnetic in the composition range of 1≥x>0.3 and are ferromagnetic in the composition range of 0≤x<0.3. In the ferromagnetic region, the Curie temperature and the spontaneous magnetization decrease rapidly with increasing x or with the decrease of mean electron concentration. Many physical properties of the alloys are discussed on the basis of three postulates, i.e., 1) electrons at Mn sites have itinerant character, 2) electrons at Ni sites have localized character and 3) at Fe sites, electrons have itinerant character in the antiferromagnetic range and localized character in the ferromagnetic range. The relation between the atomic distance and the magnetic moment is discussed. The origin of the Invar effect is qualitatively explained on these bases.View full abstractDownload PDF (1000K) -
E. Šimánek, Z. Šroubek, M. Tachiki1967 Volume 22 Issue 2 Pages 547-551
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe effect of correlation on the degree of covalency in transition metal salts is discussed using a configuration interaction approach. It is shown that the electron transfer accompanied by a one-electron excitation of the redistribution or polarization type represents an important two-electron excitation which produces an appreciable enhancement of the spin-density at the ligand.View full abstractDownload PDF (640K) -
Koji Kosuge1967 Volume 22 Issue 2 Pages 551-557
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSMagnetic properties in VO2 have been studied in the temperature range from 100 to 380°K with the Mössbauer effect measurement of Fe57 doped in VO2. Above and below the transition temperature, no internal field is observed. The observation indicates that VO2 is paramagnetic even below the transition temperature and then it was concluded that the drastic transition in VO2 from semiconductor to metal is caused by some origin other than the magnetic ordering.
The nature of the chemical bond in VO2 has been also discussed from the impurity effect on the magnetic susceptibility. The origin of the phase transition which appeared in V2O3 and VO2 was systematically discussed in the light of Goodenough’s model.View full abstractDownload PDF (852K) -
Hisashi Abe, Motohiro Matsuura, Akira Hirai, Junsuke Haruna, Mamoru Me ...1967 Volume 22 Issue 2 Pages 558-572
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSNMR of Mn55 and N14 in Mn4N were studied in its ferrimagnetic ordered phase, by using both pulsed and steady state methods. Three resonance lines are separately observed from corner site Mn (Mn-I), face-centered site Mn (Mn-II) and N. The resonance line of Mn-II is much broader than those of Mn-I and N, and has a complex structure, which can be accounted for as a powder pattern of quadrupole split lines modified by an anisotropic hyperfine interaction. The hyperfine field at Mn-I is antiparallel to, and those at Mn-II and N, are parallel to the macroscopic magnetization. Resonance frequencies of Mn-I and N decrease with temperature as usual, whereas that of Mn-II increases initially with temperature, it then follows a steep fall off. From the temperature dependences of these resonance frequencies and sub-lattice magnetizations, derived by neutron diffraction, the phenomenological isotropic hyperfine coupling constants including the transferred hyperfine coupling are estimated. Some discussions are given of these results.View full abstractDownload PDF (2008K) -
Yukito Tanabe, Ken-Ichiro Gondaira1967 Volume 22 Issue 2 Pages 573-581
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSIt is shown that the observed features of the spinwave sideband structures in MnF2 can be understood by assuming the transition mechanism proposed earlier and led to a successful interpretation of the infrared two magnon absorption.
Selection rules of the magnon induced optical transition are discussed taking explicitly the symmetry of the crystal and orbitals into account. The results predict that the line shapes of the σ and π absorption should be opposite to those of the infrared absorption as is really the case. Calculated line shapes are in qualitative agreement in the case of σ1 (σ-polarized, at 18477.1 cm−1) and π1(π-polarized, at 18460.8 cm−1), but not with σ2 (at 18485.3 cm−1). Sidebands in FeF2 are also discussed.View full abstractDownload PDF (1188K) -
Kazuo Yamagata1967 Volume 22 Issue 2 Pages 582-589
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe weak ferromagnetism of Mn(HCOO)2·2H2O is studied by torque measurement below 3.7°K. The direction of the ferromagnetic moment is parallel to the c-axis above 1.7°K and to the b-axis below this temperature. The magnitude of the ferromagnetic moment in the low temperature phase (1.1×103emu/mole at 1.3°K) is considerably larger than that in the high temperature phase (1.9×102emu/mole at 2.0°K). It is pointed out that the difference can be explained by considering both of Dzyalcshinsky-Moriya and NiF2-type mechanisms.
The effect of the external magnetic field on the phase change at 1.7°K is studied by observing transitions induced by the external field at temperatures near 1.7°K. The transition is detected by measuring dM⁄dH as a function of H. The angular dependence of the flopping field at 1.3°K and the temperature dependence of the flopping field can be explained by a conventional theory.View full abstractDownload PDF (972K) -
Kanji Hirabayashi1967 Volume 22 Issue 2 Pages 590-597
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSStresses around an edge dislocation near a free surface are calculated using two kinds of elastic representations (Volterra dislocations): One is a ring deformed by removal of a slice of uniform thickness and the other is a ring deformed by slip. Only the former is shown to yield a stable network plane of dislocations parallel to a free surface. The conditions of stability of the network plane are discussed in relation to a compressive surface stress. The network plane seems to give a possible explanation of superstructures observed on the (111) surfaces of diamond-type crystals.View full abstractDownload PDF (628K) -
Takashi Joko, Akira Fukuhara1967 Volume 22 Issue 2 Pages 597-604
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSSimultaneous diffraction of X-ray is theoretically studied for four cases in which the relevant reciprocal points form an isosceles triangle, an equilateral triangle, a square, or a regular hexagon. Explicit expressions are derived for the X-ray wave-field in the crystal when all sets of the diffracting planes concerned satisfy the Bragg condition simultaneously. These expressions give the absorption coefficient characteristic of each polarization-type and eventually explain the anomalous transmission owing to the simultaneous diffraction for the particular configurations. In the case of the equilateral-triangle configuration, the smallest absorption coefficient is the same as in the case of a single diffraction corresponding to a side of the triangle. In all the other cases enhancements of the anomalous transmission are predicted. Some of the results are compared with the experiment by G. Borrmann (Z. Krist. 121 (1965) 6).View full abstractDownload PDF (736K) -
Kunizô Shinano, Hiroshi Itô1967 Volume 22 Issue 2 Pages 605-610
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSBehavior of a charged particle in a biconical cusp field is numerically investigated using a statistical approach. The present considerations are restricted to the case where a particle starts from one of point cusps, traverses the midplane and encounters the other point cusp. At the starting point of a particle, the values of the constant of motion and its magnetic moment are fixed, but the phase of gyration is chosen uniformly in the region (0, 2π). Statistical distribution for the magnetic moment of the particle in the latter adiabatic region is obtained. The probability that the magnetic moment of this particle becomes larger than the previous or a certain value is estimated.View full abstractDownload PDF (736K) -
Katsumichi Yagi, Goro Honjo1967 Volume 22 Issue 2 Pages 610-625
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSElectron microscopic study of single crystal films of NaCl containing CaCl2 was performed in more detail than that previously reported (J. Phys. Soc. Japan 19 (1964) 1892), with respect to climb motion of grown-in dislocations during observation and with respect to precipitation of CaCl2. A characteristic interaction between climbing dislocations was observed and the sign of climb motion was determined to be positive by a new method based upon the characteristic black-and-white aspect of a dislocation image near the foil surfaces, which is due to the anomalous absorption effect. It was also concluded that as incipient precipitates nucleate, they introduce an abnormal 1/6⟨112⟩ type displacement in the matrix along {111} precipitation planes and they preferentially nucleate on a dislocation causing dissociation of it into two partial segments. The climb motion is discussed in connection with the observations and a model for the nucleation and growth process of the precipitate is given.View full abstractDownload PDF (5936K) -
Kiyoshi Yatsui, Yoshio Inuishi1967 Volume 22 Issue 2 Pages 626-634
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe helical instability and oscillations in short positive columns immersed in longitudinal magnetic field are experimentally investigated. It was found that several higher order modes of helical instabilities begin to grow in turn with azimuthal mode number m coexisting with helical m=1 mode as the magnetic field increases above a critical field Bc for the m=1 mode. Helical m=1 mode acompanies higher harmonics due to the nonlinearities above Bc. The nonlinear effects are enhanced with increasing magnetic field and carrier density. Oscillation frequency of the helix first increases with increasing magnetic field and finally decreases passing through a maximum in accordance with a nonlinear theory of Holter and Johnson. In a sufficiently short positive column, the plasma is always stable for all modes of instabilities independent of the magnetic field being in agreement with a short column theory of Timofeev.View full abstractDownload PDF (1144K) -
Osamu Aono1967 Volume 22 Issue 2 Pages 634-637
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA beam injected in a plasma loses its energy owing to a resonant interaction, when the system approaches an unstable state. The interaction is treated in the framework of the wave theory, because the close binary collisions are not affected by the instability. The rate of energy loss is much larger than the value obtained by use of the test particle method.View full abstractDownload PDF (340K) -
Humio Naruse1967 Volume 22 Issue 2 Pages 638-653
Published: February 05, 1967
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSIn order to see the qualitative properties of the Hall effect in the magnetohydrodynamic flow past a body at large magnetic Reynolds number Rm and large Reynolds number Re, the steady, incompressible flow near a two-dimensional stagnation point is studied on the assumption that a magnetic field is parallel to the velocity at infinity upstream and normal to the surface of the wall which is an insulator.
For small values of the Hall parameter and pressure number series solutions are derived and the formulae for the local skin friction are obtained for Rm⁄Re<<1, =1, >>1. It is shown that the component of the skin friction, which is normal to the flow direction at infinity upstream, is positive or negative according as Rm⁄Re>>1 or <<1, and the Hall effect produces little change in the skin friction for (Remark: Graphics omitted.).View full abstractDownload PDF (1352K) -
N. S. Bhatnagar, R. P. Gupta1967 Volume 22 Issue 2 Pages 653-656
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSCreep in a circular membrane, fixed at the boundary, has been studied on the basis of a non-linear law. It is found that both the stress and displacement components change with time. Solutions in terms of infinite series have been obtained. These solutions are more general than the ones which were previously obtained by Odqvist. A numerical example has also been given.View full abstractDownload PDF (364K) -
Toru Kishii, Kazuo Ooka1967 Volume 22 Issue 2 Pages 657
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSDownload PDF (148K) -
Kiyoshi Sugibuchi1967 Volume 22 Issue 2 Pages 658
Published: February 05, 1967
Released on J-STAGE: May 29, 2007
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Hirotaka Yokoyama, Ryuji Watanabe, Shu Chiba1967 Volume 22 Issue 2 Pages 659
Published: February 05, 1967
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Keiichi Imakubo1967 Volume 22 Issue 2 Pages 660
Published: February 05, 1967
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Takeshi Hiraoka, Tetsuo Kitai, Eiji Tatsumoto1967 Volume 22 Issue 2 Pages 661
Published: February 05, 1967
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Kanji Ogawa, Shin-ichi Matsuoka, Kantaro Senda1967 Volume 22 Issue 2 Pages 662
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Kunio Aiki, Kenzi Hukuda1967 Volume 22 Issue 2 Pages 663
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Hiroshi Taneichi, Katsufusa Shoda1967 Volume 22 Issue 2 Pages 664
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Masayoshi Azuma1967 Volume 22 Issue 2 Pages 665
Published: February 05, 1967
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Mitsuo Satoh, Paul R. Spencer, Charles P. Slichter1967 Volume 22 Issue 2 Pages 666
Published: February 05, 1967
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Nobukata Nagasawa, Hideyuki Nakagawa, Yoshio Nakai1967 Volume 22 Issue 2 Pages 667
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Kazuhiko Yoshida, Mikio Yamamoto, Takashi Onozuka1967 Volume 22 Issue 2 Pages 668
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Yasuhiro Shinnaka1967 Volume 22 Issue 2 Pages 669
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Shizuo Miyake, Kazunobu Hayakawa, Rokuro Miida1967 Volume 22 Issue 2 Pages 670
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Toshitaka Idehara, Reiji Sugaya, Yasushi Terumichi, Shigetoshi Tanaka, ...1967 Volume 22 Issue 2 Pages 671
Published: February 05, 1967
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