| X光激光在等离子体中的传播 |
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| 引用本文： | 邵云峰,张国平.X光激光在等离子体中的传播[J].强激光与粒子束,1992,4(2):181-185. |
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| 作者姓名： | 邵云峰 张国平 |
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| 作者单位： | 北京应用物理与计算数学研究所，北京应用物理与计算数学研究所 北京市8009信箱 100088，北京市8009信箱 100088 |
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| 基金项目： | 国家高技术计划激光领域资助项目 |
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| 摘 要： | 由于等离子体柱中有垂直于轴向的电子密度梯度,致使X光激光在等离子体柱内传播时发生折射。折射效应限制了增益区的长度,采用“双靶对接”的实验方法,能有效地抑制折射的影响。本文从理论上阐述了折射效应对激光增益的影响相当于在小讯号增益系数上加了一个负项;并给出X光激光出靶端的强度角分布及偏离轴向的折射角;为“双靶对接”实验提供靶面的夹角值。理论计算结果与实验结果符合得很好。
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| 关 键 词： | X光激光 增益区长度饱和 折射效应 双靶对接 电子密度梯度 |
PROPAGATION OF X-RAY LASER IN PLASMA |
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| Shao Yunfeng,and Zhang Guoping
Institute of Applied Physics and Computational Mathematics,P. O. Box.PROPAGATION OF X-RAY LASER IN PLASMA[J].High Power Laser and Particle Beams,1992,4(2):181-185. |
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| Authors: | Shao Yunfeng and Zhang Guoping
Institute of Applied Physics and Computational Mathematics P O Box |
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| Institution: | Shao Yunfeng,and Zhang Guoping
Institute of Applied Physics and Computational Mathematics,P. O. Box. 8009 Beijing 100088 |
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| Abstract: | Because of electron density gradients, refraction will occur when x rays propagate in plasmas. Refraction tends to go direct the x rays out of high density regions ,shortening the distance that x rays can travel within the plasmas, and limiting the amplification thereby . In thick target , refraction is more serious. Double- targets coupling design can lessen refraction .In this paper , we suppose that the density and gain profiles within the plasma are linear and find that refraction introduces a loss term to the laser amplification .Theoretical simulations for x -rays refraction in the gain region are shown . |
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| Keywords: | electron density gradients refraction effect saturation of gain length double targets coupling x -ray laser |
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