用于土卫六高密度等离子体特性表征的4ω汤姆逊散射探针。

4ω Thomson scattering probe for high-density plasma characterization at Titan.

作者信息

Ross J S, Kline J L, Yang S, Henesian M, Weiland T, Price D, Pollock B B, Glenzer S H

机构信息

Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10D524. doi: 10.1063/1.3489136.

DOI:10.1063/1.3489136

PMID:21033879

Abstract

In preparation for the upcoming experiments on the Titan laser at the Jupiter Laser Facility, a new Thomson scattering system has been designed and implemented. This system allows electron temperature and density measurements in a high-density regime (n(e)>10(21) cm(-3)). A 263 nm probe has been demonstrated to produce a total energy of 15 J at 4ω(263 nm) in a 1 ns square pulse with a focal spot size of 100 μm. This probe has been used for imaging Thomson scattering of the ion feature. The goal of this study is to investigate the heating of a preformed plasma by a short-pulse heater beam.

摘要

为筹备即将在木星激光设施的泰坦激光器上进行的实验，设计并实现了一种新型汤姆逊散射系统。该系统能够在高密度区域（n(e)>10(21) cm(-3)）测量电子温度和密度。已证明263纳米探针在1纳秒方脉冲中、焦斑尺寸为100微米时，在4ω(263 nm)下可产生15焦耳的总能量。该探针已用于离子特征的成像汤姆逊散射。本研究的目的是研究短脉冲加热光束对预形成等离子体的加热情况。