核融合研究
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
41 巻, 4 号
選択された号の論文の3件中1~3を表示しています
  • 石村 勉
    1979 年 41 巻 4 号 p. 279-285
    発行日: 1979年
    公開日: 2011/03/04
    ジャーナル フリー
    A new type fusion reactor is proposed. The reactor consists of four identical mirror machines each of which is equipped with a plasma-neutral particle converter. The mirror machine is asymmetric so that the magnetic field of the one end of the machine is larger than that of the other end. So, the plasma trapped in the mirror machine is lost through the end of weaker field. The plasma flux lost through the end enters the plasma-neutral particle converter where ions of the plasma aquire surplus energy and, then, change into neutral particles by charge exchange collision in a gas chamber. The neutral particle beam from the plasma-neutral beam converter is injected into the next mirror machine through the entrance port attached at the side of the machine. The ion confinement time of the reactor is expected to be several times longer than that of each mirror machine composing the reactor. Since the energy which is necessary to compensate the energy loss from the reactor is supplied to the ions during their fleight in the plasma-neutral particle converter, it is not necessary to equip the reactor with any neutral beam injector.
  • 単色ラングミュア波があるプラズマと, トカマクプラズマ
    杉原 亮, 水野 幸雄
    1979 年 41 巻 4 号 p. 286-316
    発行日: 1979年
    公開日: 2011/03/04
    ジャーナル フリー
    衝突が非常に少ないプラズマを対象とする新古典論を, 分布関数をとおして, もう一度詳細にみなおしてみた。すると, 次のことが明らかになった。即ち, 分布関数は, 全速度空間にわたってマックスウェル分布からずれており, たゞその速度微分のみが共鳴領域に局在する。このことはこれまでの計算結果自体には影響を及ぼさないが, 現象の理解を大巾に変える。
  • 岩間 尚文, 大場 康雄, 築島 隆繁
    1979 年 41 巻 4 号 p. 317-340
    発行日: 1979年
    公開日: 2011/03/04
    ジャーナル フリー
    Estimation of spectrum parameters of a stationary and homogeneous random field is examined in terms of a pair of fixed probes. The effect of finite probe volumes on estimators for determining the mean wave-number and the wave-number spectral width is studied by integrating the random field over the probe volumes. So long as this effect is unsignificant, the estimate biases tend to decrease with the probe separation, while the statistical errors are enhanced. Thus there exists an optimum probe separation. Various types of correlators may be used for evaluating the complex covariance of the probe signals easily. However a method of evaluation, which is analogous to the pulse-pair processing in radar systems, is preferred by reason of relatively high statistical accuracy.
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