Re-emission technique for early time, hohlraum radiation symmetry measurements on SGII facility

被引：4

作者：

Chen, Bolun ^{[1
]}

Jiang, Wei ^{[1
]}

Jing, Longfei ^{[1
]}

Yuan, Zheng ^{[1
]}

Li, Hang ^{[1
]}

Yu, Bo ^{[1
]}

Pu, Yudong ^{[1
]}

Su, Ming ^{[1
]}

Yan, Ji ^{[1
]}

Huang, Tianxuan ^{[1
]}

Jiang, Shaoen ^{[1
]}

Liu, Shenye ^{[1
]}

Yang, Jiamin ^{[1
]}

Ding, Yongkun ^{[1
]}

机构：

[1] Research Center of Laser Fusion, CAEP, Mianyang 621900

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2013年 / 25卷 / 02期

关键词：

Bi alternative target; Early time hohlraum symmetry; P[!sub]2[!/sub] Legendre component; Re-emission;

D O I：

10.3788/HPLPB20132502.0385

中图分类号：

学科分类号：

摘要：

Indirectly driven capsule implosions are driven by four shock waves whose strength and relative timing must be controlled to high precision to keep the fuel on a low adiabat. The symmetry during the first 2 ns should be tuned carefully. The mainline tuning targets chosen are the high Z re-emission spheres. For record of instantaneous asymmetry during the first 2 ns, multiple images in the time of the soft X-ray re-emission from a non-imploding Bi ball on SGII facility were taken in 2011. The re-emitted images with hohlraum lengths of 1350 μm and 1500 μm were obtained and the experimental P2/P0 and P4/P0 time histories were deduced. A simple analytical view-factor model is established, and the simulation result of P2/P0 is in agreement with the measured P2/P0.

引用

页码：385 / 388

页数：3

共 8 条

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