中国激光, 2000, 27 (1): 42, 网络出版: 2006-08-09
纳秒、飞秒激光脉冲下铝等离子体发射光谱及其空间特性的比较
Comparison of Characteristics of X-Ray Emission And Its Spatial Distributions in an Alumium Plasma Using fs and ns Laser Pulses
摘要
研究了45 fs和6 ns的强激光脉冲作用铝靶等离子体的发射光谱特性,发现在飞秒下X射线发射以K壳层为主,等离子体的温度(500 eV),电子密度(3×1021/cm3)比纳秒情况(100 eV,2×1020/cm3)下要高;铝等离子体的X射线发射长度短而且强区更靠近靶面。
Abstract
The characteristics of X-ray emission in aluminum plasmas using 45 fs and 6 ns pulsed lasers respectively are reported. It shows that under the fs laser, the X-ray emission is dominantly from the K shell, the aluminum plasma′s temperature is 500 eV and the electron density is 3×1021/cm3, while under the ns laser, the L shell, 100eV and 2×1020/cm3 are obtained correspondingly. The spatial distributions are also compared simply.
覃岭, 邓健, 钟方川, 张正泉. 纳秒、飞秒激光脉冲下铝等离子体发射光谱及其空间特性的比较[J]. 中国激光, 2000, 27(1): 42. 覃岭, 邓健, 钟方川, 张正泉. Comparison of Characteristics of X-Ray Emission And Its Spatial Distributions in an Alumium Plasma Using fs and ns Laser Pulses[J]. Chinese Journal of Lasers, 2000, 27(1): 42.