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Inferences of mix in direct-drive spherical implosions with high uniformity

D D Meyerhofer, J A Delettrez, R Epstein, V Yu Glebov, V N Goncharov, R L Keck, R L McCrory, P W McKenty, F J Marshall, P B Radha2001年Plasma Physics and Controlled FusionIF 2.2出版社

A large number of diagnostics have been used to study the performance of gas-filled, plastic-shell direct-drive implosions on the 60-beam OMEGA laser system (Boehly T R et al 1997 Opt. Commun.133 495). These diagnostics allow an estimate of the amount of fuel-pusher mixing in the compressed core. Implosions have primary neutron yields and fuel areal densities that are ~35% and ~100% of the predicted one-dimensional values, respectively. A highly constrained model of the core conditions and fuel-shell mix has been developed. It suggests that there is a `clean'fuel region surrounded by a mixed region, with the clean region accounting for ~70% of the fuel areal density.

日本語訳

多数の診断手法が、60ビームOMEGAレーザーシステム(Boehly T R et al 1997 Opt. Commun. 133 495)におけるガス充填・プラスチックシェル直接駆動爆縮の性能を研究するために用いられてきた。これらの診断手法により、圧縮コアにおける燃料-プッシャー混合の量を推定することが可能となる。爆縮における一次中性子収量と燃料面密度は、それぞれ一次元予測値の約35%および約100%である。コアの状態と燃料-シェル混合に関する高度に拘束されたモデルが構築された。このモデルは、混合領域に囲まれた「クリーンな」燃料領域が存在し、そのクリーンな領域が燃料面密度の約70%を占めることを示唆している。

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