[en] CuInSe₂ single crystals were grown by the Bridgman method, As grown CuInSe₂ single crystals are known to be n-type. The temperature dependence of the electrical conductivity and Hall effects of n-CuInSe₂, single crystal has been measured in the temperature range from 50degK to 300degK in He cryogenerator (Air product, CSC 202B). The experimental results showed that at 300degK the electrical conductivity was about 4 x 10² (Ω.cm)^-1, the carrier concentration about 5.6 x 10¹⁷ per cm³ and the Hall mobility 50 cm²/v.s.. The donor levels of CuInSe₂ located at 0.016 eV and 0.028 eV below the conduction band due to excess Cu and In. At low temperature (120degK-300degK) the Hall mobility was proportional to Tsup(3/2) indicating ionized impurity scattering. (Author)

[en] An invariant Lagrangian for the chiral Superfields with SU(N) internal symmetry is formulated, and it is demonstrated that the superfield equations derived from this Lagrangian along with an invariant constraint condition lead to the Bargmann - Wigner equations for the oridnary fields with definite spins. (Author)

[en] Study on the optimization of the design method of toroidal field coil (T.F.coil) was done. Through this work, we establish the logic for the design of the T.F.coil in experimental tokamak device and utilize this technique to the design of small tokamak which has major radius of 27cm and minor radius 5cm. The results obtained through this work is as follows: Resistance and inductance of the T.F.coil are 50 mohms and 7.6 mH with respective. T.F.coil stores magnetic energy of 0.86MJ for toroidal field of 4.2T at the plasma center corresponding to 5.68x10sup(6) AT of magnetiomotive force. Toroidal magnet is composed of 28 coils and 14 turns each and so the coil currents are 15KA. Temperature rise of 5 degC and maximum tensile hoop stress of 12200 psi are resulted from one pulsation of T.F.magnet. This T.F.coil also has the feature of pure tension D-shape. (Author)

[en] Compact, high-power-density approaches to fusion power represent alternatives to main-line fusion concepts, Tokamaks and mirrors. If technological issues are resolved, theses approaches would yield small, low-cost fusion power plants. This survey reviews the principal physics and technology employed by leading compact magnetic fusion plants. (Author)

[en] To achieve the uniform discharge between the Chang's profile solid electrodes, uv-preionization by trigger wire discharge is employed. Dependence of laser output on gas mixing ratio, charging voltage, and addition of seed gas is investigated and the optimum operation is obtained. Peak power, pulse energy, and overall efficiency of the laser output is 0.6 MW, 240 mJ, and 4.2% respectively. Transverse pattern of the laser output beam is observed to be TEM₀₀ mode at the electrode separation of 20 mm. (author)

[en] The 6-level kinetic model on optically pumped iodine laser behaviour is examined and optimum pressures for parent molecules CH₃I and CF₃I are obtained through computer working on adequate laser rate equations derived from this model. Quenching phenomenon due to excessive heating in the medium of the active molecules is investigated by appropriate assumption on pumping efficiency. The results of the calculation show the 6-level model is superior over the 4-level model already reported by the authors. The optimum values in gas pressures which are 120 torr for CF₃I and 25 torr for CH₃I agree with the experimental values reported elsewhere. Optimum values for the transmittance of the output coupled mirror are also obtained and found to be dependent on pumping intensity. (author)

[en] As to the backscatter instability which is one of nonlinear three-wave resonant interactions, the reflectivity(r) in the case of homogeneous-slab medium is calculated, assuming all the three wavepackets negligible damping caused by medium. The expression has turned out such that r = tanh²KAsub(p)L, where K, Asub(p), and L are the constant coupling coefficient, the constant pump-wave amplitude, and the thickness of the medium engaged in the interaction each. When this result is interpreted in terms of the stimulated Brillouin back-scattering in a so-called underdense plasma in controlled fusion, we find the reflectivity twice as large as that by others in the limit of large pump-wave damping, and unfitting to former experiments in the independence on the incident laser-light intensity. We see the incompatibility rise chiefly from neglecting the damping of pump-wave in the plasma. In contrast to the former results by others in the limit of large pump-wave damping, our result might be regarded as that for cases of negligible pump-wave damping, in general stimulated back-scattering phenomena. (author)

[en] The air plasma was constructed in a 150 cm long pyrex tube of diameter 8 cm by externally applying the 10 MHz electromagnetic wave generated by a 1 kW R.F. oscillator. The temperature and densities of this air plasma are measured by a Langmuir probe at the various R.F. powers. In order to compress and heat this plasma, the axial pulse magnetic field is applied to the plasma by a single-turn coil connected to a Blumelin transmission line. The temperal and spatial dependency of pulse magnetic field is measured by the photographic observation of pulse signals at an oscilloscope, which is connected to the Rogowski coils inserted into four different positions in the plasma tube. (author)

[en] Si-CdSe n-n heterojunction have been prepared by growing CdSe thin film on Si(111) surface with vacuum deposition method. The sign of photovoltage of this heterojunction was reversed at 1.67eV. The energy band profile of this heterojunction was deduced from its electrical and optical properties. This lattice mismatching abrupt heterojunction had a discontinuous energy band profile with the discontinuity of 0.87eV at the conduction band, of 0.27eV at the valance band. (author)

[en] Transverse form factors for the processes sup(13)C(e,e')sup(13)Csup(*) were calculated with the Cohen-Kurath wave function, under assumption that the electromagnetic form factors of nucleons inside the nucleus are different from those of free nucleons. The result shows an excellent agreement with the data. (Author)