Influence of the number of cones on speckle patterns in the Laser MegaJoule configuration

被引：0
|
作者：
Le Cain, A. [1 ]
Riazuelo, G. [2 ]
Sajer, J. M. [1 ]
机构：
[1] CEA, CESTA, DAM, BP 2, F-33114 Le Barp, France
[2] CEA, DIF, DAM, F-91297 Le Barp, France
来源：
IFSA 2011 - SEVENTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS | 2013年 / 59卷
关键词：
HOT-SPOTS; FUSION; PLASMA;
D O I：
10.1051/epjconf/20135905002
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
This paper investigates statistical properties of hot spots when speckle patterns are generated by the superimposition of multiple laser beams in a 2 cone and a 3 cone Laser MegaJoule configuration in the zone where all the beams overlap. Three different cases of polarizations are investigated: P polarization, S polarization and the case of Double Polarization Smoothing (DPS). It is found that the sizes of the speckles depend on the choice of the polarization and that DPS seems to be the best option in both configurations. It is shown that the longitudinal radius of the hot spots in a 2 cone configuration is bigger than in a 3 cone configuration.
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页数：5
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