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论文类型：期刊论文

发表时间：2011-09-01

发表刊物：LASER AND PARTICLE BEAMS

收录刊物：Scopus、SCIE、EI

卷号：29

期号：3

页面范围：299-304

ISSN号：0263-0346

关键字：Energy loss; Laser; Two-component plasma

摘要：We use a two-dimensional particle-in-cell simulation to investigate the dynamic polarization and stopping power for an ion beam propagating through a two-component plasma, which is simultaneously irradiated by a strong laser pulse. Compared to the laser-free case, we observe a reduction in the instantaneous stopping power that initially follows the shape of the laser pulse and becomes particularly large as the laser frequency approaches the plasma electron frequency. We attribute this large reduction in the ion stopping power to an increase in plasma temperature due to the energy absorbed in the plasma from the laser pulse through the process of wave heating. In addition, dynamic polarization of the plasma by the ion is found to be strongly modulated by the laser field.