Open AccessThe application of phase contrast imaging to implosion capsule diagnose in high energy density physics environment
Author(s) -
Jiwang Yan,
Zheng Jian-Hua,
Chen Li,
Lin Zhang,
Jiang Shao-En
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.148701
Subject(s) - implosion , inertial confinement fusion , hohlraum , optics , physics , pinhole (optics) , phase contrast imaging , phase (matter) , laser , interference (communication) , backlight , plasma , phase contrast microscopy , computer science , channel (broadcasting) , computer network , liquid crystal display , quantum mechanics
The variation of multi-layer shell capsule in implosion process is the most important part of inertial confinement fusion. Phase contrast imaging which relies on gradients of the refractive index and wave interference is proposed to characterize the typical implosion capsule. The experiments are performed on the Shenguang Ⅱ laser facility. The point-like X-ray source at 4.75 keV can be efficiently produced from laser interactions with Ti target and observed by pinhole- point backlight technique. The phase contrast images obtained with point-like X-ray source provide complementary information about the multi-layer shell capsule, and the spatial resolution is better than 10 μm. The X-ray phase contrast imaging shows more detailed features than absorb imaging, and good agreement with one-dimensional numerical simulations.