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arXiv 0812.2339physics.plasm-phphysics.acc-ph
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laser等离子体中负离子加速的库仑内爆机制

Coulomb implosion mechanism of negative ion acceleration in laser plasmas

T. Nakamura, Y. Fukuda, A. Yogo, M. Tampo, M. Kando, Y. Hayashi, T. Kameshima, A. S. Pirozhkov, T. Zh. Esirkepov, T. A. Pikuz, A. Ya. Faenov, H. Daido, S. V. Bulanov

摘要:

提出了激光等离子体中负离子加速的库仑内爆机制。当强激光脉冲辐照团簇靶时,带正电的离子发生库仑爆炸,带负电的离子被向内加速。负离子的最大能量比正离子低几倍。对库仑内爆机制进行了理论描述和Particle-in-Cell模拟,并给出了强激光脉冲与团簇靶相互作用实验中负离子加速的证据。

英文摘要:

Coulomb implosion mechanism of the negatively charged ion acceleration in laser plasmas is proposed. When a cluster target is irradiated by an intense laser pulse and the Coulomb explosion of positively charged ions occurs, the negative ions are accelerated inward. The maximum energy of negative ions is several times lower than that of positive ions. The theoretical description and Particle-in-Cell simulation of the Coulomb implosion mechanism and the evidence of the negative ion acceleration in the experiments on the high intensity laser pulse interaction with the cluster targets are presented.

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