摘要
测量了１．０５３μｍ激光照射金平面靶时产生的３ω０／２谐波散射光的时间积分谱，由红移峰和蓝移峰的波长推算出双等离子体衰变区域的电子温度以及ｎｃ／４区域的等离子体膨胀速度，即离子声速。实验结果和不稳定性饱和机制预言的结果有良好的自洽性。
Time integrated spectrum of 3ω 0/2 light in plasma produced by 1.053μm laser irradiating on Au disk is shown in this paper. Based on the measurement of red shifted peak and blue shifted peak. The temperature of electron in interaction region and the plasma expansion speed in one quarter critical electron density layer are obtained. The experiment results agree well with nonlinear saturation theory of Two Plasmon Decay.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1999年第1期61-64,共4页
High Power Laser and Particle Beams
基金
国家高技术惯性约束聚变领域资助
关键词
激光等离子体
红移峰
散射光谱
金平面靶
laser produced plasma, TPD, red shifted peak, blue shifted peak, ion acoustic speed, relaxing time, critical density
