1. Reducing wall plasma expansion with gold foam irradiated by laser.
- Author
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Lu Zhang, Yongkun Ding, Shaoen Jiang, Jiamin Yang, Hang Li, Longyu Kuang, Zhiwei Lin, Longfei Jing, Liling Li, Bo Deng, Zheng Yuan, Tao Chen, Guanghui Yuan, Xiulan Tan, and Ping Li
- Subjects
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PLASMA gases , *X-ray emission spectroscopy , *SIMULATION methods & models , *GOLD , *COMPARATIVE studies - Abstract
The experimental study on the expanding plasma movement of low-density gold foam (~1% solid density) irradiated by a high power laser is reported in this paper. Experiments were conducted using the SG-III prototype laser. Compared to solid gold with 19.3 g/cc density, the velocities of X-ray emission fronts moving off the wall are much smaller for gold foam with 0.3 g/cc density. Theoretical analysis and MULTI 1D simulation results also show less plasma blow-off, and that the density contour movement velocities of gold foam are smaller than those of solid gold, agreeing with experimental results. These results indicate that foam walls have advantages in symmetry control and lowering plasma fill when used in ignition hohlraum. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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