Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 61, Issue 1
Displaying 1-3 of 3 articles from this issue
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  • A Review of Advanced Fuel Fusion
    Hiromu Momota
    1989 Volume 61 Issue 1 Pages 5-16
    Published: January 20, 1989
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.61.5
    JOURNAL FREE ACCESS
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    Comparative studies of various fusion fuel cycles show that p-11B and 3He-3He fuel cycles which yield no neutron need more studies before acceptance as fusion fuels. D-3He fuel cycle appears to be most attractive. Because of very rare terrestrial resources, breedings of 3He were so far studied. The recent discovery of lunar 3HE changed the whole picture for advanced fuels. A program of studying a D-3He/FRC fusion is just started as a US-Japan collaboration program. As a result, interdisciplinary collaborations between space and fusion research are strongly recommended to develop advanced fuel fusion.
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  • Radiation from Hot Plasmas
    Kuniaki Masai
    1989 Volume 61 Issue 1 Pages 17-37
    Published: January 20, 1989
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.61.17
    JOURNAL FREE ACCESS
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    Radiation processes are discussed for astrophysical hot plasmas in particular attention to nonequilibrium ionization. We consider typical two cases, ionizing condition attained for a shock-heated tenuous plasma of a supernova remnant and recombining condition for an X-ray irradiated plasma surrounding a neutron star. The former (latter) is characterized by the ionization degree lower (higher) than that expected for the collisional ionization equilibrium. Emission spectra from such plasmas are affected by secondary emission processes following ionization/recombination as well as by the deviation of relative ion abundances from their equilibrium values.
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  • Magnetic Analysis Including the Field due to Vacuum Vessel Eddy Currents in the Hitachi Tokamak (HT-2)
    Mitsushi Abe, Kazuhiro Takeuchi, Hideshi Fukumoto, Michio Otsuka
    1989 Volume 61 Issue 1 Pages 38-48
    Published: January 20, 1989
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.61.38
    JOURNAL FREE ACCESS
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    A magnetic analysis to determine plasma surface position is applied to the magnetic data of the Hitachi Tokamak (HT-2). The analysis takes account of toroidal eddy currents on the vacuum vessel wall. Magnetic probes in HT-2 are placed on both sides of the wall (plasma side and outside), making it possible to determine magnitudes of eddy currents which flow in the toroidal direction. The magnitudes of the coil currents and eddy currents are determined so as to reproduce the measured magnetic fields, and to reconstruct flux surfaces and plasma surface are reconstructed. Taking into account the eddy currents, the determination errors of the plasma surface position are reduced by up to 1/2.3 during start-up and terminating phases, compared with the case without eddy currents.
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