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Laser-driven acceleration of a dense matter up to 'thermonuclear' velocities

S Yu Guskov, H Azechi, N N Demchenko, V V Demchenko, I Ya Doskoch, M Murakami, H Nagatomo, V B Rozanov, S Sakaiya, R V Stepanov2007年Plasma Physics and Controlled FusionIF 2.2出版社

The results of theoretical studies and numerical simulations of laser-driven acceleration of a flat foil up to ultrahigh velocity of the order of 1000 km s−1, which corresponds to the achievement of thermonuclear temperatures due to kinetic energy transition into thermal energy at an inelastic impact, are reported. The behavior of a foil accelerated to such high velocities, in particular, the distribution of foil density, which defines thermonuclear reaction intensity, has been studied. The calculation results are compared with the results of the experiments performed on the Gekko/HIPER laser, where a laser-driven projectile achieved record-breaking velocity. The laser pulse and foil parameters responsible for acceleration of the projectile up to 'thermonuclear' velocities in a dense state have been determined.

日本語訳

理論的研究と数値シミュレーションの結果について、平面フォイルのレーザー駆動加速による超高速度(約1000 km/s)への到達が報告されている。これは、運動エネルギーの非弾性衝突による熱エネルギーへの変換を通じて熱核温度に相当する値に達することに対応する。このような高速度まで加速されたフォイルの挙動、特に熱核反応強度を決定するフォイル密度分布が研究された。計算結果は、Gekko/HIPERレーザーを用いた実験結果と比較された。この実験では、レーザー駆動による飛翔体が記録的な速度を達成した。高密度状態における熱核速度までの飛翔体の加速に寄与するレーザーパルスパラメータとフォイルパラメータが決定された。

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