120TW/30fs激光产生的Al等离子体 X射线发射谱分析

核聚变与等离子体物理 ›› 2011, Vol. 31 ›› Issue (2): 122-126.

120TW/30fs激光产生的Al等离子体 X射线发射谱分析

于新明1, 2，易有根1，胡峰2，赵阳2，蒲昱东2，杨家敏2，张继彦2，郑志坚2

( 1. 中南大学物理科学与技术学院，长沙 410083；2. 中国工程物理研究院激光聚变研究中心，绵阳 621900)

收稿日期:2010-10-13 修回日期:2011-02-25 出版日期:2011-06-15 发布日期:2011-09-02
作者简介:于新明(1986-)，男，广西桂林人，硕士，从事等离子体诊断方面研究。
基金资助:
国家自然科学基金资助项目(10874156；10875109)

Analysis of X-ray spectrum from aluminum plasmas generated by 120TW/30fs laser pulse

YU Xin-ming1, 2, YI You-gen1, HU Feng2, ZHAO Yang2, PU Yu-dong2, YANG Jia-min2, ZHANG Ji-yan2, ZHENG Zhi-jian2

(1. Department of Physics Science and Technology, Central South University, Changsha 410083;2. Research Center of Laser Fusion, CAEP, Mianyang 621900)

Received:2010-10-13 Revised:2011-02-25 Online:2011-06-15 Published:2011-09-02

摘要/Abstract

摘要：

在SILEX激光装置上利用超强超短激光(120TW/30fs)与Al靶相互作用产生热稠密等离子体。采用类氢共振线与类氦共振线线强比诊断得到电子温度在480～670eV之间，采用类锂jkl伴线与类氦共振线强度比得到电子温度在430～610eV之间，两种诊断方法得到的结果基本一致。用类氦互组合线与类氦共振线强度比方法获得电子密度在1.80×10²⁰～6.45×10²⁰cm^-3之间。根据诊断结果，得到了类氢共振线，类氦共振线，类锂伴线(n=2)强度在两种激光对比度下随激光功率密度的变化规律。

关键词: 温度诊断, 密度诊断, 伴线, 激光对比度

Abstract:

The hot dense aluminum plasmas have been generated by the interaction with 120TW/30fs laser pulse on the SILEX device. In order to diagnose electron temperature, two different ways have been introduced, which achieved the same result. Using the intensity ratio of H-like resonant to He-like resonant, the temperature between 480eV and 670eV has been derived, the temperature between 430eV and 610eV achived by the Li-like satellite (jkl) to He-like resonant. The electron density is derived from the intensity ratio of He-like intercombination to He-like resonant, the diagnosed electron density is from 2.6×10²⁰cm^-3 to 5.3×10²⁰cm^-3. The evolution of the intensity of H-like resonant, He-like resonant, Li-like satellite (abcd, qr, jkl) to laser power intensity have been depicted in two laser intensity contrast ratio.

Key words: Temperature diagnose, Density diagnose, Satellite, Laser intensity contrast ratio

中图分类号:

O434.12
TL65

于新明1, 2，易有根1，胡峰2，赵阳2，蒲昱东2，杨家敏2，张继彦2，郑志坚2. 120TW/30fs激光产生的Al等离子体 X射线发射谱分析[J]. 核聚变与等离子体物理, 2011, 31(2): 122-126.

YU Xin-ming, YI You-gen, HU Feng, ZHAO Yang, PU Yu-dong, YANG Jia-min, ZHANG Ji-yan, ZHENG Zhi-jian. Analysis of X-ray spectrum from aluminum plasmas generated by 120TW/30fs laser pulse[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2011, 31(2): 122-126.

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