No abstract available

[en] The first biased limiter experiment has been done in Heliotron E, which is a typical stellarator/heliotron type device. This experiment investigates the boundary physics of the currentless plasmas, which are produced in the magnetic limiter (divertor) configuration. We analyze the experimental results related to the surface potential, recycling process, and plasma parameters using a material limiter which was biased from the vacuum chamber. The boundary density profile was measured by a thermal Li beam probe to investigate the effect of the biased limiter. (author)

[en] Measurements were done to obtain the one-dimensional sizes of rapidly fluctuating bursts with fast spikes whose rise times are typically about one second, and in some extreme cases less than 0.1 second. The results of two bursts with fast spikes are presented. One has a soft spectrum, and the other has a very hard spectrum. The measured one-dimensional size of both events indicates relatively a small size and simple structure. It can be said, however, that the source size is not so small as expected from its rapid time variations. Therefore, a thermal explanation of these bursts seems to be excluded

No abstract available

[en] We have developed a practical code system to calculate double differential cross sections of all emitted particles and kerma factors for the n+¹²C reaction in the energy region from 20 to 80 MeV, and compared the results calculated using the code system with experimental data. As a result, it has been found that the code system is applicable to nuclear data evaluation of ¹²C in JENDL high energy file. (author)

[en] Pressure-driven MHD instabilities Heliotron E were studied by shifting the vacuum magnetic axis outward (Δ_ν > 0) or inward (Δ_ν < 0), and/or applying an additional toroidal field additively or subtractively. The global stability aspects of experimental results are consistent with the theoretical predictions using the ideal and resistive MHD model based on the stellarator expansion approximation. Stability improvement was obtained for the β(0) <= 1% regime in case where the additive toroidal field was (3-8)% of the toroidal component from the helical coils for -2 cm ≤ Δ_ν ≤ 0 cm. It is believed that the pressure profile due to toroidal field effect was unintentionally adjusted to improve stability instead of the magnetic hill. For higher beta β(0) > 2-3%. It was found that the m = 1/n = 1 mode associated with the slash-l = 1 rational surface became strongly unstable, which may limit the central beta value. Strong coherence was also observed between B-tilde_θ (m = 1 / n = 1) and n-tilde l (m = 1 / n = 1). (author). 10 refs, 10 figs

[en] A trial wavefunction is constructed for nuclear matter in terms of the reaction matrix. The trial function includes only two-particle excitations and the resulting energy expectation value for two-nucleon forces with a state-independent repulsive core of Yukawa shape approaches in the thermodynamic limit the energy given by the lowest order Brueckner theory with standard dispersion. Evaluation of the energy expectation value is carried out in a systematic way by use of an identity that holds between the Hamiltonians and reaction matrix. (Author)

No abstract available

[en] The effects of saccharide additives on the dehydration and drying properties as well as the quality properties of dried kiwi fruit products were investigated. Sliced kiwi fruits were soaked and dehydrated in citric acid, glucose, sucrose and the pH-adjusted sugar solutions, individually. Osmotic dehydration and drying kinetic parameters were calculated using exponential models. Drying rate constants and water activities of dried kiwi fruits with osmotic dehydration were superior to those without osmotic dehydration. Soaking solutions with a lower pH led to a decrease in lightness. However, soaking sokution pH had no significant effect on the water activity or drying kinetics. (Author)

[en] Double-differential proton emission cross sections were measured for proton-induced reactions on several medium-heavy nuclei (^54,56Fe, ⁶⁰Ni, ⁹⁰Zr, and ⁹³Nb) at two incident energies of 14.1 and 26 MeV. The (p,p') data for ⁵⁶Fe and ⁹³Nb were compared with available data of (n,n') scattering for the same target nuclei and incident energies, and both data were analyzed using the Feshbach-Kerman-Koonin model to extract the strength V₀ of the effective N-N interaction which is the only free parameter used in multistep direct calculations. (author)