All issues
Volume 36 (1974)
- Issue 6 Pages 1501-
- Issue 5 Pages 1221-
- Issue 4 Pages 923-
- Issue 3 Pages 623-
- Issue 2 Pages 317-
- 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 36, Issue 4
Displaying 1-50 of 56 articles from this issue
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Akira Murakami1974 Volume 36 Issue 4 Pages 923-928
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSExperimental investigations have been made on track registration properties of α-particles in the solid-state track detector of celluloid film. Celluloid films exposed to α-particles of 4.4∼2.2 MeV were etched in NaOH(6N) solution at 40°C and 50°C. The upper limits of the critical (threshold) energy for track registration and the maximum registration range of α-particles in the detector have been found to be 3.7∼3.8 MeV and 19∼21 μm, respectively.View full abstractDownload PDF (776K) -
Jun-ichi Kawa, Kenji Okada, Tamio Yamagata1974 Volume 36 Issue 4 Pages 929-936
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSAngular distributions of deuterons to 13 levels in 53Cr were measured up to 3.72 MeV of excitation energy using 22 MeV alpha particles. The angular distributions are compared with the zero-range DWBA calculations employing the explicit wave functions for the 53Cr states given by a shell model calculation. The 53Cr states above Ex=1.28 MeV which are only weakly excited by one-nucleon transfer reactions are found to be rather strongly excited. They are assigned as the states of which main configuration corresponds to the coupling of one neutron outside the N=28 core with the Jπ≠0+ protons. An attempt is made to determine the absolute normalization constant for the (α, d) cross sections and the value D02∼106 MeV2 fm3 is obtained.View full abstractDownload PDF (1068K) -
Kêitsiro Aizu1974 Volume 36 Issue 4 Pages 937-943
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe nonferroelectric and ferroelectric phases of NH4HSO4 belonging to space groups B21⁄a and Ba are both recognized as ferroic phases derived from a common prototypic phase which should belong to space group Pmmn. The sequence of phase transitions Pmmn→B21⁄a→Ba can be deduced as arising from successive instabilities of a pair of conjugate vibrational modes with wave vectors (±1⁄4, 0, ±1⁄2) in the reciprocal space and with a transformation property which is found out. In particular the transition B21⁄a→Ba is concluded to be due to an instability for variation of the wavephase of the condensed soft modes in the B21⁄a phase. The lowest-temperature phase belonging to B1 is found not to be ‘homophone’ with the B21⁄a and Ba phases. Concerning the temperature dependences of components of spontaneous polarization and electric susceptibility, the theoretical results are compared with the observations by Pepinsky et al..View full abstractDownload PDF (988K) -
Kenji Miyakawa, Naganori Hijikuro, Hazime Mori1974 Volume 36 Issue 4 Pages 944-953
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA simplified theory of the nematic-smectic phase transition is developed to study the relation between intermolecular forces and various phases of liquid crystals. This is done by employing the expandable-lattice model and by introducing a new approximation which takes into account the short-range correlation between molecules. The intermolecular force is assumed to consist of an anisotropic dispersion force and an anisotropic hard-core repulsion.
The pressure versus temperature phase diagram is determined for a typical model of intermolecular force. It is found that the nematic phase is surrounded by the smectic, isotropic liquid and gas phase with three triple points. It also turns out that as the ratio of the depth of intermolecular potential between short axes to that between long axes increases above a critical value, the nematic-smectic phase transition disappears and the isotropic liquid-smectic phase transition appears.View full abstractDownload PDF (1108K) -
Gen Soda, Hideaki Chihara1974 Volume 36 Issue 4 Pages 954-958
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA general relation exists between the relative magnitude of the power spectra J(m)(ω) that appear in the expressions of nuclear spin relaxation times T1, T2 and T1ρ of powdered specimen, i.e. J(0)(ω):J(1)(ω):J(2)(ω)=6:1:4. the relation holds exactly in the weak collision case irrespective of the modes of motion responsible for the relaxation. The proof is based on the symmetry properties of the spherical harmonics of rank two and therefore applicable not only to dipole-dipole but also to quadrupole coupling interaction and other problems. The reduction factor of the second moment of the nuclear magnetic resonance that results from a type of molecular motion also bears a simple general relation to the minimum value of T1 due to the motion.View full abstractDownload PDF (560K) -
Tsuneya Ando, Yasutada Uemura1974 Volume 36 Issue 4 Pages 959-967
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSCharacteristics of level broadening and transverse conductivity of a two-dimensional electron system under extremely strong fields have been theoretically investigated in the simplest approximation without the difficulty of divergence, i e. in the so-called damping theoretical one. Those of various cases of short- and long-ranged scatterers have been obtained. To see the dependence on the range explicitly, numerical calculation has been performed for the system with scatterers with the Gaussian potential. Especially in case of short-ranged ones the peak value of the transverse conductivity has been shown to be (N+1⁄2)e2⁄π2h which depends only on the natural constants and the Landau level index. It has been argued from general point of view that this fact is approximately true without reference to kinds of approximations. Such characteristic of the conductivity was confirmed experimentally, but there still remain some problems as to the absolute value of the level width.View full abstractDownload PDF (1092K) -
Toshinobu Soma1974 Volume 36 Issue 4 Pages 968-970
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSHigher than third order contributions in terms of pseudopotentials to the crystal energy of covalent semiconductors such as Si, Ge, etc. —covalent bond correction energies— are examined in detail. In these crystals the perturbation formula, where large pseudopotential Fourier component V(111) is regarded as a first order small quantity and other V(G)’s as second order small quantities, is efficient.View full abstractDownload PDF (392K) -
Hiroshi Yamauchi, Hiroshi Watanabe, Yuichi Suzuki, Hideo Saito1974 Volume 36 Issue 4 Pages 971-974
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSMagnetization measurements of α-phase Fe–Mn alloys, in which manganese concentration is extended up to 11 at% by cold-working techniques, have been made from liquid He temperature to room temperature. The magnetic moment decreases linearly with increasing manganese concentration and assuming that the magnetic moment of iron atom is constant at 2.217 μB, one obtains the magnetic moment of manganese atom to be 0.8 μB.
On the basis of the spin wave theory, the exchange intergral J and the exchange stiffness constant D are estimated from precision measurements of magnetization at low temperatures.View full abstractDownload PDF (436K) -
Sin Giu Kang, Hideya Onodera, Hisao Yamamoto, Hiroshi Watanabe1974 Volume 36 Issue 4 Pages 975-979
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSMössbauer effect study of bcc Fe–Mn alloys has been made for compositions up to about 13% Mn. The data can be interpreted on the assumption that the Fe and Mn moments are almost constant being 2.2μB and 0.9μB, respectively, which is consistent with various NMR data, and also with the CPA calculation by Hasegawa and Kanamori. The internal field at Fe atoms decreases linearly with the number of nearest neighbour Mn atoms, which is considered to be due to the polarization of conduction electrons.View full abstractDownload PDF (580K) -
Kentaro Ohhashi, Ikuji Tsujikawa1974 Volume 36 Issue 4 Pages 980-988
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSMagnetic susceptibilities, χ, on the 1st and the 2nd stage FeCl3-graphite compounds were measured in a temperature region between 1.5 K and 77 K. For both stage compounds, the temperature dependence of χ was explained as anisotropic 2-dimensional antiferromagnet with spin flopping in the basal plane. The 1st stage compound was the antiferromagnet with TN=3.9 K, J⁄k=−0.41 K and effective anisotropy field |HA|=1.4 kOe. The anisotropy mainly results from the crystalline field and its constant D was estimated as +0.09 cm−1. For the 2nd stage compound, TN=3.6 K, J⁄k=−0.35 K, |HA|=3.6 kOe and D=+0.16 cm−1 were obtained. The effect of the intercalation into graphite, which results in trigonal distortions of Cl octahedrons as well as size distributions of clusters, was found to be more important in the 2nd stage compound than in the 1st stage one. The interlayer interaction through graphite layer was negligible compared with HA even in the 1st stage compound.View full abstractDownload PDF (1224K) -
Takehiko Terao, Tsuneo Hashi1974 Volume 36 Issue 4 Pages 989-999
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA method is described which allows chemical shifts in solids to be detected to a good accuracy by sharply determining the first moment. The analysis is made by using spin-temperature concepts and it is shown that the chemical-shift tensor can be determined if a single tensor contributes to the spectrum, and the average if more than one tensor contributes. Measurements are made in a single crystal of KH2PO4. The average tensors obtained are axially symmetric about the c axis with σ⁄⁄=−25.6 ppm and σ⊥=−8.3 ppm relative to C6H12 for 1H(300 K), and with σ⁄⁄=−1.1 ppm and σ⊥=−16.5 ppm relative to 85% H3PO4 for 31P(77 K). These values are discussed qualitatively. The 19F chemical shift in CaF2 is also obtained, and the result is in good agreement with that of pulse train method.View full abstractDownload PDF (1368K) -
Masao Shimizu, Masahiko Sakoh1974 Volume 36 Issue 4 Pages 1000-1005
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSMagnetic susceptibilities and electronic specific heat are calculated for bcc iron in the band model by making use of the calculated density of states by Connolly. From the observed temperature variation of the magnetization, the dependence on the magnetization of exchange energy is estimated. Electrical resistance, thermal conductivity and thermoelectric power are also calculated for paramagnetic bcc iron in a simple model of Fermi surfaces by averaging electron-phonon interactions over Fermi surfaces. It is shown that the observed temperature variations of susceptibility, electrical resistance and thermoelectric power in the paramagnetic state and of specific heat can be explained by our calculated results in the simple band model.View full abstractDownload PDF (852K) -
I. S. Lyubutin, Toshie Ohya, T. V. Dmitrieva, Kazuo Ôno1974 Volume 36 Issue 4 Pages 1006-1009
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe temperature dependence of hyperfine magnetic fields at Fe57 and Sn119 nuclei in Mn1.01Fe1.98Sn0.01O4 ferrite was investigated. The hyperfine field at tin nuclei shows a maximum as temperature is varied. This anomaly may be explained quantitatively by assuming the supertransfer of the 3d-spin density from iron to tin and the direct overlap of iron and tin orbitals.View full abstractDownload PDF (472K) -
Toshijiro Tanaka1974 Volume 36 Issue 4 Pages 1010-1016
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe localized spin wave states in a linear chain of anisotropic exchange ferromagnet with a substitutional ferromagnetic impurity spin are investigated exactly. Both the cases of an isotropic and anisotropic impurity-host exchange interaction are studied. We calculate the energies and wave functions of localized spin wave modes. Two types of localized s modes above the top of spin wave band are obtained in the anisotropic exchange impurity case. The appearance of these s modes is characteristic of the present system. Hole modes which appear in the gap are also discussed.View full abstractDownload PDF (816K) -
Kunihide Okada, Teruya Shinjo1974 Volume 36 Issue 4 Pages 1017-1023
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe magnetic hyperfine field at Co57 in antiferromagnetic CoO was measured by Mössbauer experiments at very low temperatures. The sample was cooled down to 0.08 K by a He3-dilution refrigerator. Then the nuclear polarization of the parent nucleus, Co57, occurred and the emission spectrum became to be asymmetric. From the intensity ratio of the outermost peaks it was derived that the sign of the hyperfine field was plus and the magnitude was 590±40 kOe. A considerable amount of Fe3+ coexisted and the hyperfine field at Co57 nucleus estimated from the Fe3+ spectrum was 603±80 kOe.View full abstractDownload PDF (896K) -
Kazuo Itoh, Yuko Fujita, Kazuo Kanematsu1974 Volume 36 Issue 4 Pages 1024-1028
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSCrystallographic, magnetic and Mössbauer studies on Zr1−xMoxFe2 are reported. Crystal structure changes with increasing x from MgCu2 type (x≤0.15) to MgZn2 type (x≥0.25). Magnetic moment of Fe estimated from magnetization is nearly unchanged (≈1.6 μB) in x≤0.15 and decreases considerably in x≥0.2. Mössbauer spectra at 78 K showed the existence of Fe with hyperfine fields of 217 and 199 kOe in Zr0.9Mo0.1Fe2 and of Fe with 99 and 0 kOe in Zr0.75Mo0.25Fe2. Magnetic properties of MgZn2 type compounds Zr0.7Mo0.3Fey and Zr0.5Mo0.5Fey change from weak ferromagnetism for y=2.0 to paramagnetism for y=1.6.View full abstractDownload PDF (512K) -
Noboru Takimoto1974 Volume 36 Issue 4 Pages 1029-1036
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA method is presented for the solution of an integrodifferential equation which governs the electromagnetic propagation in a metal film when the metal electrons suffer diffuse reflection at each surface of the film. It is found that the equation goes over into a homogeneous Hilbert boundary problem for two unknown functions, which for large enough film thickness can be solved by iterations and leads to a solution in a form independent of the physical parameters, thereby simplifying greatly the two-sided Wiener-Hopf method developed by Baraff. A tentative interpretation is also given of the enhancement of field penetration by diffuse reflection.View full abstractDownload PDF (960K) -
Hiroshi Iwasaki, Hajime Yoshida, Shiro Ogawa1974 Volume 36 Issue 4 Pages 1037-1042
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSEffect of pressure on the CuAu alloy having a long period ordered structure has been studied using mainly a tetrahedral-anvil type press. The alloy was annealed at various temperatures ranging from 350°C to 500°C during application of pressure. After temperature and pressure were reduced to ambient ones, the structure formed in the alloy during compression and retained to atmospheric pressure was studied by a usual X-ray diffraction method. The maximum pressure applied was 70 kbar. It has been observed that pressure increases the order-disorder transition temperature at an initial rate of 1.5±0.2 deg/kbar. The long period of the CuAuII structure formed under compression has been observed to increase with increasing pressure. Under the pressure higher than 50 kbar the CuAuII structure becomes unstable and the only ordered structure formed is CuAuI. The results obtained are discussed by taking into account a distortion of the Fermi surface of the alloy induced by pressure.View full abstractDownload PDF (804K) -
Kenzi Hukuda, Hiroaki Hanafusa, Takamasa Kawano1974 Volume 36 Issue 4 Pages 1043-1048
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSX-ray irradiation of KDP–K2SeO4 mixed crystal is shown to produce SeO43− and SeO3− radicals. The ESR spectrum of SeO43− has well-resolved proton hyperfine structure which exhibits the “quintet to triplet” transition as seen on AsO44− radical in KDA. This radical may be used as a new “probe” to study the proton dynamics of KDP. The tensors of hyperfine interaction with Se77 for these radicals are evaluated from the angular dependence of ESR spectra of the radicals. The principal values of the hyperfine tensor of SeO43− are as follows, T⁄⁄=3389MHz and T⊥=3178MH in the paraelectric phase, and T1=3055MHz, T2=2986MHz and T3=3490MHz in the ferroelectric phase.View full abstractDownload PDF (708K) -
Kazuo Morigaki, Michie Onda1974 Volume 36 Issue 4 Pages 1049-1057
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSSpin-dependent conductivity measurement has been done on phosphorus-doped silicon in the liquid helium temperature range using the microwave with frequency of 9.6 GHz. The resistivity decrease due to the donor spin resonance is interpreted in terms of the spin energy transfer model in which the microwave energy absorbed by the donor spin system is transferred to the mobile electron system contributing to the charge transport in the intermediate concentration region.View full abstractDownload PDF (1012K) -
Toshio Katsuyama, Shohei Wakita, Masamitsu Hirai1974 Volume 36 Issue 4 Pages 1058-1064
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSNew absorption bands have been observed in KCl–KI (10 mol%) crystals X-rayed near liquid helium temperature and attributed tentatively to complex H(ICl33−) centers. The main absorption band is located at 425 nm and a sub-band at 800 nm with the half width of 0.43 eV and 0.21 eV, respectively. The dichroic property of the bands is consistent with that of a center with its internuclear axis along ⟨110⟩ directions. The center is thermally reoriented above about 70 K with Ereori=0.10±0.01 eV and destructed above 190 K with Edest=0.16±0.01 eV. The peak positions, the half width, the polarization, the oscillator strength and the thermal properties of the bands are qualitatively discussed by a model of the heteronuclear diatomic molecule. The qualitative analysis suggests that the hole of the complex H center is found having a large probability around the I atom as one of constituents.View full abstractDownload PDF (940K) -
Terumasa Kato, Ryuji Abe1974 Volume 36 Issue 4 Pages 1065-1068
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSESR spectrum of Cr3+ doped in TGS was reinvestigated. The principal values and the directions of the D-tensor for the lines which appeared at lower fields, were determined at 60°C in the paraelectric region. Each line was split into doublet in the ferroelectric region. It was ascertained from the angular dependence of the lines in the b-plane that this anomalous splitting originates from a tilting of the principal axis by the movement of the ligand atoms surrounding the Cr3+ ion.View full abstractDownload PDF (416K) -
Kiyoyasu Imai1974 Volume 36 Issue 4 Pages 1069-1074
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe behavior of the dielectric constant εb of TGS as a function of temperature for different values of the uniaxial pressures applied to x-, y- and z-axis was investigated up to 600 bar. The Curie-Weiss law, εb≅C⁄(T−T0), was almost unaffected by uniaxial pressures along the three axes except for the vicinity of shifted transition temperature. The paraelectric Curie temperature T0 was linearly shifted with a rate of ∂T0⁄∂X1=−6.7±0.5 and ∂T0⁄∂X2=−9.1±0.7 for x-and y-axis, respectively, and ∂T0⁄∂X3=19.0±1.5 for z-axis for pressures up to about 300 bar, all in unit of °C/kbar. The values of the three rates can reproduce fairly well the values given by previous experiments of hydrostatic and two dimensional pressures, and agree with those predicted by the Ehrenfest relation, the phenomenological theory and the Janovec’s theory. It was shown that there is no thermodynamic contradiction between the Ehrenfest relation and the phenomenological theory.View full abstractDownload PDF (736K) -
Masayoshi Sato, Koji Sumino1974 Volume 36 Issue 4 Pages 1075-1083
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe thermal conductivity vs temperature relation in deformed germanium single crystals is measured in the temperature range from 1.5 to 30 K. The results are analysed on the basis of the Callaway model. Klemens’ theory on the scattering of phonons due to the static strain field of dislocations accounts for the experimental results reasonably well. The dislocation densities deduced from the thermal conductivity data are greater than those counted by direct observation of dislocations by factors less than 3.7 and 2.1 in specimens deformed to stage I and stage II, respectively. Discrepancies between the theoretical curves and the experimental curves are found at temperatures around 20 K and below 2.2 K. The former is accounted for by assuming that point-defect like imperfections have been introduced into specimens during deformation, while the latter could be attributed to the scattering of phonons due to dangling electrons located at the dislocation core.View full abstractDownload PDF (1184K) -
Masako Hirata, Mitsuji Hirata1974 Volume 36 Issue 4 Pages 1084-1086
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe interaction of a vacancy with group V impurity atoms in silicon has been studied. Vacancy capture radii were compared among group V impurity atoms As, Sb and Bi. Though absolute values are not given at this time, it is interesting to note the trend that the vacancy capture radius decreases as the covalent radius of impurity atom increases.View full abstractDownload PDF (304K) -
Hideo Segawa1974 Volume 36 Issue 4 Pages 1087-1095
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe dc and ac conductivity in amorphous As2Se3·As2Te3, As2Se3·2As2Te3 and As2Se3·3As2Te3 has been measured in the temperature range between 77 K and 320 K. The dc conductivity depends exponentially on reciprocal temperature and shows the intrinsic conduction.
The frequency dependence of ac conductivity has been measured at frequencies between 5×104 and 2.4×1010 Hz. The ac conductivity changes as the first power and the second power of frequency in the low and the high frequency regions, respectively and has no frequency dependence at microwave frequencies.
The experimental result of ac conductivity can be interpreted by the two relaxation processes which come from hopping within the short-range ordered cluster and that between clusters. The proposed model is consistent with the observed temperature and frequency dependences of ac conductivity in these materials.View full abstractDownload PDF (932K) -
Satoshi Tanaka1974 Volume 36 Issue 4 Pages 1096-1106
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThermal vibrations which are excited in a helical polymer chain are theoretically dealt with. Dispersion relations and thermal fluctuations are given in terms of cylindrical coordinates in order to apply for X-ray diffractions of polymer crystals. It is found from a viewpoint of lattice dynamics that there is the mode (E(θ)-mode) in a helical polymer chain which takes zero’s frequency when the wave number kζ=1⁄P (P: pitch of helix). The mean square amplitude ⟨Rkζ=1⁄P2⟩ of E(θ)-mode, which is calculated concretely, makes a divergence when kζ=1⁄P.View full abstractDownload PDF (1284K) -
Takashi Oshiyama, Hiroshi Kudo, Michi-hiko Mannami1974 Volume 36 Issue 4 Pages 1107-1113
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSChannelling effects of 0.63–2.4 MeV H+ and He+ ions in (110) and (111) planes of germanium were studied by backscattering method. Backscattered energy spectra were measured as a function of the angle of the incident particles to the atomic planes and the results were compared with the calculations based on a model, in which the motion of the particles is described by the diffusion in the transverse momentum space. It was shown that the experimental results can be explained by this model with a constant diffusion coefficient when the incident angle is less than about 0.6 times the critical angle of channelling. The dependence of the diffusion constant on the incident particles, particle energy and the atomic plane was studied.View full abstractDownload PDF (908K) -
Hiroshi Asai1974 Volume 36 Issue 4 Pages 1114-1120
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSTheoretical calculation has been made on the problem of random flights of myosin particle, where it is assumed that individual myosin particle can slide on F-actin filament along its long axis during F-actin activated ATP hydrolysis and then diffuse freely in the aqueous solution. The apparent diffusion coefficient of such myosin particles is formulated as D=D0(1−f)+(1⁄9)L0Vf, where D0 is the diffusion coefficient of the free particles in the absence of ATP and F-actin, f is the fraction of the particles bound on F-actin filaments, L0 is the average length of F-actin, and V is the sliding velocity of the particles on F-actin filaments. It is suggested that the sliding velocity V can be estimated experimentally on the basis of the above equation.
An equivalent but more generally applicable equation than the above equation has also been derived by solving the Brownian motion of myosin particle described by the Langevin’s equation. The factors which influence on efficiency of the energy transformation from chemical to mechanical are discussed.View full abstractDownload PDF (816K) -
Yukikazu Itikawa1974 Volume 36 Issue 4 Pages 1121-1126
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA cross section formula is obtained for the electron-impact vibrational excitation of a polyatomic molecule, with the use of the Born approximation. An average over initial and a sum over final rotational states are taken. The resulting formula is applied to the cases where (1) electron-molecular multipole interactions dominate and where (2) a polarization force is also important.View full abstractDownload PDF (664K) -
Yukikazu Itikawa1974 Volume 36 Issue 4 Pages 1127-1132
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSCross sections for excitations of the three fundamental vibrational modes of H2O by electron collisions are calculated with the use of the Born theory for the collision energies from the threshold to 100 eV. Electron-molecular multipole (dipole and quadrupole) interactions, as well as polarization force, are taken into account. The dominance of the quadrupole interaction relative to the dipole one prevents the cross section from falling rapidly as the energy increases, resulting in a fairly large cross section even in the high energy range (\gtrsim10 eV). Differential cross sections are also calculated at 1, 15, and 53 eV. For the latter two incident energies, a comparison is made with the relative differential cross section measured by Trajmar et al.View full abstractDownload PDF (764K) -
Satoru Ohno, Hideo Okazaki, Shigeru Tamaki1974 Volume 36 Issue 4 Pages 1133-1136
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe electrical resistivities of dilute solute of Bi, Sn, In, Zn and Cu in the solvent liquid antimony have been measured. The electrical resistivities for solute of Bi and Sn give a good agreement with the calculation on the basis of Faber-Ziman theory, while, solutes of In and Zn do not agree. This may be related to the fact that there exists a kind of cluster associated with a compound formation which has been fairly justified by the thermodynamical data. Then, the experimental results have been discussed in connection with the thermodynamical parameters.View full abstractDownload PDF (444K) -
Hiromi Noto1974 Volume 36 Issue 4 Pages 1137-1147
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSDispersion relations for longitudinal oscillations of an interacting electron-hole system exposed to a magnetic field are investigated quantum-mechanically in the scheme of the random phase approximation. There exist three collective modes in the long wavelength limit. The dependence on the direction of propagation and the behaviors of polarization are investigated. It is shown that the frequency of the lowest mode approaches zero as the propagation-direction becomes perpendicular to the magnetic field. In the highest frequency mode the electron and the hole systems make an out-of-phase oscillation with each other. The behaviors of polarization of the intermediate and the lowest modes depend on the propagation-direction as well as the strength of the magnetic field.View full abstractDownload PDF (1012K) -
Jun-ichi Sakai, Junkichi Satsuma, Nobuo Yajima1974 Volume 36 Issue 4 Pages 1148-1157
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe propagation of ion acoustic waves interacting with plasmon gas is investigated within an approximation, such that the rapid oscillations of electron plasma wave are averaged out; the equations for the slow mode of the ion acoustic wave are thus obtained. The decay interaction plays an important role in this process and leads to damping or growth of the ion acoustic wave depending on the shape of the plasmon energy spectrum. The result in the linear approximation is compared with that obtained by Vedenov and Rudakov to show incompleteness of their result. It is found that the finite-amplitude ion acoustic wave in plasmon gas obeys a Korteweg-de Vries equation modified by two additional terms, which represent change of the phase velocity and damping or growth of the amplitude. The decay rate so obtained is also compared with that of the electron Landau damping.View full abstractDownload PDF (900K) -
Hiroshi Ishizuka, Hisao Ôno, Shoji Kojima1974 Volume 36 Issue 4 Pages 1158-1163
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSExperiments were carried out in which a 3–5 keV helium ion beam was injected into a low-density helium plasma along a pulsed magnetic field. Low-frequency waves growing in the direction of the beam flow were observed for the magnetic field strengths of 300–2000 G, which were characterized by the oscillation frequency in excess of the ion cyclotron frequency but less than the ion plasma frequency. The wave mode was axisymmetric and the radial wavenumber was much larger than the axial one. Axial wavelength measurements on launched waves suggested that the phase velocity of the growing wave was nearly equal to the ion beam velocity. Most of the experimental results were found to be consistent with a simplified theory of electrostatic ion cyclotron instability in a slow-beam plasma system, which however predicted larger growth rate than that measured.View full abstractDownload PDF (932K) -
Choji Nakaya1974 Volume 36 Issue 4 Pages 1164-1173
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA systematic procedure is presented for determining an equilibrium periodic vortex flow of finite amplitude in a viscous fluid between concentric circular cylinders. The equations of motion for the vortex flow is solved by expanding the solution in power series of the amplitude. The stability of the vortex flow thus determined for a wide gap case is studied to axisymmetric small disturbances. The amplification factor of the disturbance is calculated up to the fifth order approximation. The domain of the wave number of stable mode of perturbation is predicted fairly narrower than by the existing third order theory. This is in more quantitative agreement with experiments on the non-uniqueness of vortex flows.View full abstractDownload PDF (988K) -
Shigeaki Suwa, Ken-ichi Kusukawa1974 Volume 36 Issue 4 Pages 1174-1184
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSBy using the slender body approximation, the linearized equation for unsteady flow past a slender body in the presence of an applied alligned magnetic field is introduced. The transient problem of the slender body which executes an oscillation is considered. The velocity, the magnetic potential and the electric stream function are obtained in the case of small conductivity of the fluid. For an example, the lift and pitching moment of a body of revolution are calculated.View full abstractDownload PDF (888K) -
Masakazu Tatsuno1974 Volume 36 Issue 4 Pages 1185-1191
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe steady flow generated by an oscillating square cylinder immersed in a viscous, incompressible fluid is investigated experimentally. The flow pattern in the vicinity of the cylinder is classified into three types according to non-dimensional parameters r0\sqrtω⁄ν and s⁄r0, where r0 is half the side length of the model section, ω the angular frequency, ν the kinematic viscosity and s the oscillation amplitude. Especially, when the oscillation amplitude is small, the flow pattern depends on the value of r0\sqrtω⁄ν. If r0\sqrtω⁄ν<1, then one vortex system exists close by the cylinder in each quadrant. The flow, however, separates from the cylinder at the edge and twin vortices are formed between the primary vortex systems and the square cylinder side parallel to the axis of oscillation in the range of 5>r0\sqrtω⁄ν>1. When r0\sqrtω⁄ν>5, two vortex systems are generated in close vicinity to the cylinder.View full abstractDownload PDF (1936K) -
Hirowo Yosinobu, Takao Sano1974 Volume 36 Issue 4 Pages 1192-1202
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA frozen region formed around a point heat sink under a slow uniform stream of a viscous incompressible liquid is studied theoretically. The Reynolds number of the stream is assumed to be small and the Prandtl number of the liquid to be moderate. The velocity and the temperature fields around the frozen are calculated by the method of matched asymptotic expansions. Geometrical shape of the frozen region and strength of the heat sink in steady state are obtained in forms of expansion in Péclet number, product of the Reynolds and the Prandtl numbers.View full abstractDownload PDF (940K) -
Yujiro Nagata, Keizo Ohta1974 Volume 36 Issue 4 Pages 1203
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Yoshimasa Itoh1974 Volume 36 Issue 4 Pages 1204
Published: April 15, 1974
Released on J-STAGE: June 01, 2007
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Tetsu Hiraki, Kazuo Ôno1974 Volume 36 Issue 4 Pages 1205
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Kenichi Kojima, Mitsuo Kasaya, Yoshitaka Koi1974 Volume 36 Issue 4 Pages 1206
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Hiroshi Hatanaka, Takehiko Terao, Kunihiko Morimoto, Tsuneo Hashi1974 Volume 36 Issue 4 Pages 1207
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Yujiro Nagata, Keizo Ohta1974 Volume 36 Issue 4 Pages 1208
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Minoru Takahashi, Kunihiko Maezawa, Yoshitami Saito1974 Volume 36 Issue 4 Pages 1209
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Saburo Endo, Taizo Irie1974 Volume 36 Issue 4 Pages 1210
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Shozo Sawada, Shunsuke Hirotsu, Masaaki Takashige, Yoshihoro Shiroishi ...1974 Volume 36 Issue 4 Pages 1211
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Takashi Ohno, Takashi Yamaguchi, Tatsuo Kanashiro, Mitsuo Satoh1974 Volume 36 Issue 4 Pages 1212
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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Toshihiro Ichikawa1974 Volume 36 Issue 4 Pages 1213
Published: April 15, 1974
Released on J-STAGE: May 29, 2007
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