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Alternate fusion: continuous inertial confinement

D C Barnes, R A Nebel, L Turner, T N Tiouririne1993年Plasma Physics and Controlled FusionIF 2.2出版社

The authors argue that alternate fusion approaches should be pursued if: (1) They do not require magnetic confinement superior to tokamaks; (2) Their physics basis may be succinctly stated and experimentally tested; (3) They offer near-term applications to important technical problems; and (4) Their cost to proof-of-principle is low enough to be consistent with budget realities. An approach satisfying all of these criteria is presented, based on continuous inertial confinement. In such an approach, the inertia of a nonequilibrium plasma produces concentrations of plasma density. Fusion gain of order unity or greater may be produced in a system as small as a few mm radius! Confinement is that of a nonneutralized plasma. A pure electron plasma with a radial beam velocity distribution is absolutely confined by an applied Penning trap field. Spherical convergence of the confined electrons forms a deep virtual cathode near r=0, in which thermonuclear ions are absolutely confined at useful densities. The authors examine the equilibrium, stability, and classical relaxation of such systems. A sketch of immediate and long-term experimental opportunities is given.

日本語訳

著者らは、以下の場合に代替核融合アプローチを追求すべきだと論じる:(1)トカマクよりも優れた磁気閉じ込めを必要としない場合;(2)その物理的根拠が簡潔に述べられ、実験的に検証可能である場合;(3)重要な技術的問題への近期的応用が期待できる場合;(4)原理実証までのコストが予算の現実と整合するほど低い場合。これらの基準をすべて満たすアプローチが提示され、それは連続慣性閉じ込めに基づくものである。このようなアプローチでは、非平衡プラズマの慣性がプラズマ密度の集中を生み出す。わずか数mmの半径を持つ系で、オーダー1以上の核融合利得が生成され得る!閉じ込めは非中和プラズマによるものである。半径方向のビーム速度分布を持つ純電子プラズマは、印加されたペニングトラップ場によって完全に閉じ込められる。閉じ込められた電子の球面収束は、r=0付近に深い仮想陰極を形成し、その中で熱核イオンが有用な密度で完全に閉じ込められる。著者らは、そのような系の平衡、安定性、および古典的緩和を検討する。近期的および長期的な実験的可能性の概要が示される。

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Inertial confinement fusion
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