First observation of ion acoustic waves produced by the Langmuir decay instability

被引:60
|
作者
Depierreux, S [1 ]
Fuchs, J
Labaune, C
Michard, A
Baldis, HA
Pesme, D
Hüller, S
Laval, G
机构
[1] Univ Paris 06, Ecole Polytech, UMR 7605 CNRS, CEA,Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France
[2] Univ Calif Lawrence Livermore Natl Lab, Inst Laser Sci & Applicat, Livermore, CA 94550 USA
[3] Ecole Polytech, Ctr Phys Theor, UMR 7644 CNRS, F-91128 Palaiseau, France
关键词
D O I
10.1103/PhysRevLett.84.2869
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Thomson scattering measurements are presented which demonstrate conclusively the occurrence of the Langmuir decay instability (LDI) in a laser-produced plasma experiment. Both products of the instability, the ion acoustic wave and the electron plasma wave, were simultaneously observed and identified with their spectral characteristics. The secondary decay of the LDI-generated electron plasma wave, into another Langmuir wave and an ion acoustic wave, has been observed for the first time. The connection with growth and saturation of the stimulated Raman instability is discussed.
引用
收藏
页码:2869 / 2872
页数:4
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