Ultrarelativistic electron generation during the intense, ultrashort laser pulse interaction with clusters
Ultrarelativistic electron generation during the intense, ultrashort laser pulse interaction with clusters
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DOI：
10.1016/j.physleta.2006.12.061
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发表时间：
2007-03-19
影响因子：
2.6
通讯作者：
Bulanov, S. V.
中科院分区：
文献类型：
--
作者：
Fukuda, Y.;Akahane, Y.;Bulanov, S. V.
使用包含Ar团簇的团簇射流，通过激光-团簇相互作用产生了高达58 MeV的准直相对论电子，电子电荷为2.1 nC。由此产生的光谱不符合麦克斯韦分布，但很好地描述了两个温度麦克斯韦。二维粒子模拟结果表明，团簇的重要作用是：高能电子通过激光脉冲与团簇的相互作用注入，在激光脉冲的直接加速过程中获得能量;低能电子在等离子体波破碎过程中被注入的韦克菲尔德加速。(c)2006 Elsevier B. V.保留所有权利。
Using a cluster jet containing Ar clusters, collimated relativistic electrons up to 58 MeV with an electron charge of 2.1 nC were generated by a laser-cluster interaction. The resulting spectrum does not fit a Maxwellian distribution, but is well described by a two-temperature Maxwellian. Two-dimensional particle-in-cell simulations demonstrate an important role of clusters that the higher energy electrons are injected by the laser pulse interaction with the clusters and then they gain their energy during the direct acceleration by the laser pulse, while the lower energy electrons are accelerated by the wakefield being injected during the plasma wave breaking. (c) 2006 Elsevier B.V. All rights reserved.