Thomson-scattering measurements in the collective and noncollective regimes in laser produced plasmas (invited)

被引：38

作者：

Ross, J. S. ^{[1
,2
]}

Glenzer, S. H. ^{[1
]}

Palastro, J. P. ^{[3
]}

Pollock, B. B. ^{[1
,2
]}

Price, D. ^{[1
]}

Tynan, G. R. ^{[2
]}

Froula, D. H. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA

[3] Inst Res Elect & Appl Phys, College Pk, MD 20740 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2010年 / 81卷 / 10期

关键词：

WAVES;

D O I：

10.1063/1.3478975

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present simultaneous Thomson-scattering measurements of light scattered from ion-acoustic and electron-plasma fluctuations in a N-2 gas jet plasma. By varying the plasma density from 1.5 x 10(18) to 4.0 x 10(19) cm(-3) and the temperature from 100 to 600 eV, we observe the transition from the collective regime to the noncollective regime in the high-frequency Thomson-scattering spectrum. These measurements allow an accurate local measurement of fundamental plasma parameters: electron temperature, density, and ion temperature. Furthermore, experiments performed in the high densities typically found in laser produced plasmas result in scattering from electrons moving near the phase velocity of the relativistic plasma waves. Therefore, it is shown that even at low temperatures relativistic corrections to the scattered power must be included. (C) 2010 American Institute of Physics. [doi:10.1063/1.3478975]

引用

页数：6

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