1. A line-imaging velocity interferometer technique for shock diagnostics without x-ray preheat limitation.
- Author
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Wang, Feng, Peng, Xiaoshi, Liu, Shenye, Xu, Tao, Mei, Lusheng, Jiang, Xiaohua, and Ding, Yongkun
- Subjects
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INTERFEROMETERS , *X-rays , *MECHANICAL shock , *PHYSICS experiments , *ABLATIVE materials , *PHYSICAL measurements - Abstract
A study was conducted with a line-imaging velocity interferometer on sandwich targets at the Shen Guang-III prototype laser facility in China, with the goal of eliminating the preheat effect. A sandwich target structure was used to reduce the x-ray preheat limitation (radiation temperature ∼170 eV) in a radiative drive shock experiment. With a thick ablator, the preheat effect appeared before the shock arrived at the window. After adding a shield layer of high-Z material on the ablator, x-rays which penetrated the ablator were so weak that the blank-out effect could not be measured. This experiment indicates that the sandwich target may provide a valuable technique in experiments such as equation of state and shock timing for inertial confinement fusion studies. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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