High energy ions generated by laser driven Coulomb explosion of cluster
High energy ions generated by laser driven Coulomb explosion of cluster
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DOI：
10.1016/s0168-9002(01)00014-6
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发表时间：
2001-05
影响因子：
1.4
通讯作者：
K. Nishihara;H. Amitani;M. Murakami;S. Bulanov;T. Esirkepov
中科院分区：
文献类型：
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作者：
K. Nishihara;H. Amitani;M. Murakami;S. Bulanov;T. Esirkepov
我们给出了强激光与超稠密等离子体相互作用的解析模型和三维粒子模拟。当激光强度超过临界值时，它会吹走星团中的所有电子，形成非中性的离子云。在离子云的库仑爆炸过程中，离子获得能量。详细讨论了不同密度、不同尺寸的团簇在不同激光强度下的离子能谱。结果表明，对于相对较大的团簇，产生了超快离子，离子能量比离子云的最大静电势能大三倍。激光驱动的团簇库仑爆炸可能提供一种新的高能离子源。
We present an analytical model and three dimensional particle simulations of intense laser interaction with a cluster of overdense plasma. When laser intensity is above a critical value, it blows off all of electrons from the cluster and forms a non-neutral ion cloud. During the Coulomb explosion of the ion cloud, ions acquire their energy. Ion energy spectra are discussed in detail for different densities and sizes of clusters with various laser intensities. It is shown that ultra-fast ions are produced for relatively large clusters, and that the ion energy becomes three times greater than the maximum electrostatic potential energy of the ion cloud. The laser driven Coulomb explosion of a cluster may provide a new high energy ion source.