Frequency increase and damping of nonlinear electron plasma oscillations in cylindrical symmetry

被引：35
|
作者：
Marques, JR
Dorchies, F
Audebert, P
Geindre, JP
Amiranoff, F
Gauthier, JC
Hammoniaux, G
Antonetti, A
Chessa, P
Mora, P
Antonsen, TM
机构：
[1] ECOLE POLYTECH, CNRS, ENSTA, LOA, F-91128 PALAISEAU, FRANCE
[2] ECOLE POLYTECH, CNRS, CPTH, F-91128 PALAISEAU, FRANCE
[3] UNIV MARYLAND, IRPDEEP, COLLEGE PK, MD 20742 USA
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.78.3463
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Radial electron plasma oscillations excited by a laser wake held are measured by frequency domain interferometry. In the nonlinear regime we observe two important effects: (i) an increase of the oscillation frequency and (ii) the damping of the oscillation in a few plasma periods. Simulations show that this last effect is related to the presence of a steep radial density gradient near the focus edge.
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页码：3463 / 3466
页数：4
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