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An ICF system based on Z-pinch radiation produced by an explosive magnetic generator

S.G. Garanin, A.V. Ivanovsky, L.S. Mkhitariyan2011年被引用 12Nuclear FusionIF 3出版社

It is known that a thermonuclear target can be ignited by an implosion accomplished with X-radiation generated by means of laser radiation conversion or by a Z pinch formed by a high-power current pulse. For these purposes laser facility NIF has been constructed in the USA, 'Megajoule' is being constructed in France and there is a project of laser facility UFL in Russia. The project of stationary facility X has been developed in SNL USA to produce a Z pinch capable of generating an x-ray pulse with parameters close to the ignition threshold. There is a great chance, however, that the already tested technologies, including disc explosive magnetic generators (DEMG), systems of current peaking based on electrically exploded foil opening switches and high-voltage switching devices, allow the intriguing problem of the ignition feasibility to be solved and the quickest and cheapest way to accomplish this to be provided. To explore this possibility, the paper will sequentially analyse the ignition conditions. The required parameters of Z pinch X-radiation and the size of the DEMG-based facility to obtain these parameters will be evaluated. Capabilities of the new current sources based on the DEMG and of the devices shaping a current pulse will be presented and compared with those required for the ignition.

日本語訳

熱核標的は、レーザー放射の変換によって生成されるX線放射による爆縮、または高電力電流パルスによって形成されるZピンチによって点火され得ることが知られている。これらの目的のために、米国ではレーザー施設NIFが建設され、フランスでは「メガジュール」が建設中であり、ロシアではレーザー施設UFLの計画がある。米国SNLでは、点火閾値に近いパラメータを持つX線パルスを生成可能なZピンチを実現するための定常施設Xの開発が進められている。しかしながら、円盤型爆磁気発電機(DEMG)、電気爆発箔開閉器に基づく電流ピーキングシステム、高電圧開閉装置を含む既に試験済みの技術によって、点火の実現可能性という興味深い問題を解決し、これを達成するための最も迅速かつ経済的な方法が提供される可能性が高い。この可能性を探求するために、本論文ではまず点火条件を順次分析する。次に、必要なZピンチX線放射のパラメータと、これらのパラメータを得るためのDEMGベースの施設の規模を評価する。最後に、DEMGに基づく新しい電流源と電流パルス整形装置の能力を提示し、点火に必要な要件と比較する。

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