Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 64, Issue 5
Displaying 1-3 of 3 articles from this issue
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  • Gauss-Legendre Quadrature Formula of Very High Order
    Tsuguhiro Watanabe, Akiji Ohuchi
    1990 Volume 64 Issue 5 Pages 397-407
    Published: November 20, 1990
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.64.397
    JOURNAL FREE ACCESS
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    Gauss-Legerndre guadrature formula of very high order is shown to be efficient for numerical integration of rapidly oscillating functions. A compact computer program is shown for computing the abscissas and weights of the Gauss-Legendre numerical integration formula.
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  • Design Study of an Indirect-Drive Target
    Hidekil Nakashima, Yoshihiro Nakane, Yukinori Kanda, Hideaki Takabe
    1990 Volume 64 Issue 5 Pages 408-429
    Published: November 20, 1990
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.64.408
    JOURNAL FREE ACCESS
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    Implosion-burn simulation was carried out by a one-dimensional Lagrangian code ILESTA-1D for inertial confinement fusion (ICF) DT targets. The targets are indirectly imploded in a cavity by X-rays converted from the laser introduced through the holes of the cavity. It is found from the simulation that the pellet gain of -100 could be obtained by a carefully tailored pulse for a laser driver energy of 5MJ.
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  • Preliminary Study on Neutron Yield from 3He 3He Fusion Plasma
    Yuzo Fukai
    1990 Volume 64 Issue 5 Pages 430-448
    Published: November 20, 1990
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.64.430
    JOURNAL FREE ACCESS
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    A qualitative estimation is presented for the yields of neutron and 7Be frrara 3He 3He fusion plasma by the following reactions: 3He (3He, n) 5Be, (γ, n) reaction of the structure material (SUS316) by 10MeV γ-ray of 3He (3He, γ) He (p, n) 3p by reaction product of protons, and, 3He (α, n) 6Be and 3He (α γ) 7Be by the same product of α Since both reactions of 3He (3He, n) 5Be and 3He (p, n) 3p have threshold energy of-20 MeV and 10.27 MeV, respectively, neutron yield rapidly increases as ion temperature in plasma increases: i. e. the values of the fraction of the total energy released in the reaction that is carried by neutrons, “Neutronicism” are 3×10-5 and 0.005 at ion temperature of 300 find 800 keV in the plasma with the same electron temperature, respectively. The yields by the (γ, n) reaction and 3He (αn) 6Be are less than the others. The yield of 7Be is 9×10-5 one 3He 3He fusion reaction and 4He impurity concentration in the plasma.
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