激光脉冲自导引后的离子动力学与相干结构形成
等离子体物理
2009-11-13 v1
摘要
通过二维粒子模拟 (particle-in-cell simulations)，在长达数皮秒的时间尺度上，数值研究了超强激光脉冲在低密度非均匀等离子体中的传播。探讨了激光脉冲电荷位移自导引后的离子动力学效应。径向离子加速导致等离子体通道壁“破裂”，引起径向空间电荷场反转及激光脉冲丝化。在较晚时刻，观察到若干长寿命准周期场结构，并以高分辨率表征了其动力学特性。在等离子体通道内部，观察到了一种兼具孤子 (soliton) 和涡旋 (vortex) 特征的电场与磁场图样。
引用
@article{arxiv.0708.2780,
title = {Ion dynamics and coherent structure formation following laser pulse self-channeling},
author = {Andrea Macchi and Alessandra Bigongiari and Francesco Ceccherini and Fulvio Cornolti and Tatiana V. Liseikina and Marco Borghesi and Satyabrata Kar and Lorenzo Romaganani},
journal= {arXiv preprint arXiv:0708.2780},
year = {2009}
}
备注
10 pages, 5 figures (visit http://www.df.unipi.it/~macchi to download a high-resolution version), to appear in Plasma Physics and Controlled Fusion (Dec. 2007), special issue containing invited papers from the 34th EPS Conference on Plasma Physics (Warsaw, July 2007)