Collection Of theses on high power laser and plasma physics, 2008, 6 (1): 193, Published Online: Oct. 9, 2009  

Experimental Research on Pinhole-Assisted Point Projection Diagnostic Scheme

Author Affiliations
1 中国工程物理研究院 上海激光等离子体研究所, 上海 201800
2 同济大学物理系, 上海 200092
Abstract
Pinhole-assisted point projection (PAPP) backlight scheme is a newly developed diagnostic technique for laser-plasma experiments in foreign laboratories, which will play an important role in diagnostic experiments of inertial confinement fusion (ICF) physics. Experiments have been carried out on the additional beam of “Shenguang-Ⅱ” laser facility, to test the practicability of PAPP scheme. The K-shell X rays (~4.7 keV) emitted from laser-produced planar Ti targets pass through the pinhole aperture with diameter of 10~40 μm, then cast the shadow of the Au sample on CCD. Time-integrated two-dimensional (2D) pictures of the samples are obtained in the experiments with the resolution better than 16.1 μm. The merits, such as high resolution, large field-of-view, high contrast, have been found in the experimental results, and PAPP will become one of the most important diagnostic methods for Rayleigh-Taylor instability research, equation of state (EOS) research and so on.
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Dong Jiaqin, Fu Sizu, Xiong Jun, Wang Ruirong, Huang Xiuguang, Shu Hua, Gu Yuan, Wang Zhanshan. Experimental Research on Pinhole-Assisted Point Projection Diagnostic Scheme[J]. Collection Of theses on high power laser and plasma physics, 2008, 6(1): 193.

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