| 激光在等离子体中成丝特性的数值模拟 |
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| 引用本文： | 于立春,陈志华,屠琴芬.激光在等离子体中成丝特性的数值模拟[J].强激光与粒子束,2000,12(3):293-296. |
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| 作者姓名： | 于立春 陈志华 屠琴芬 |
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| 作者单位： | 西北核技术研究所，西安69信箱，710024 |
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| 基金项目： | 国家863惯性约束聚变领域资助课题(863-416-1-6) |
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| 摘 要： | 用数值模拟方法研究激光在等离子体中成丝的发展过程及其特征参数对成丝的影响。模拟结果清晰地给出柱状成丝不稳定性的产生及发展。计算结果表明：入射激光强度、入射激光波长及等离子体背景密度是影响会聚强度的重要因素。该结果与国外报道的理论和实验研究吻合，可为研究抑制成丝提供参考。
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| 关 键 词： | 激光 等离子体 成丝 不稳定性 数值模拟 |
| 文章编号： | 1001-4322(2000)03-0293-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2000年3月14日 |
NUMERICAL SIMULATION OF LASER FILAMENTATIONIN UNDERDENSE PLASMA |
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| Abstract: | Developing process of filamentation and effect of characteristic parameters in underdense plasma have been studied using numerical simulation method. Production and development of two-dimensional cylinder filamentation instability were presented clearly. The results indicate incidence laser intensity and plasma background density are important factors affecting convergent intensity. At the same time, it was showed that different laser wavelength or different electron background density could affect filamentation process. The results are consistent with theory and experiments of alien reports. It can provide reference for restraining filamentation. |
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| Keywords: | laser plasmas filamentation instability |
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