XIONG Xian-cai, ZHONG Xian-xin, XIAO Sha-li, DUAN Shao-guang, GAO Jie, YANG Guo-hong. Analysis of the transmission efficiency of a two-channel elliptical crystal spectrometer[J]. Editorial Office of Optics and Precision Engineering, 2002,(6): 592-596
XIONG Xian-cai, ZHONG Xian-xin, XIAO Sha-li, DUAN Shao-guang, GAO Jie, YANG Guo-hong. Analysis of the transmission efficiency of a two-channel elliptical crystal spectrometer[J]. Editorial Office of Optics and Precision Engineering, 2002,(6): 592-596DOI:
The two-channel elliptical crystal spectrometer (TCECS) is a very important diagnostic instrument for researching inertial confinement fusion controlled by laser. Since spatial resolution is recorded by X-film or X-CCD in one channel
and time resolution is recorded by an X-streak camera in another channel
the spatial and time characteristics can be measured simultaneously. Spectrographic effects will be affected by the transmission efficiency of TCECS
which depends on the reflective ratio of a cylindrical mirror
the integrated diffraction of a crystal
the transmissivity of filter foil
and the spectrographic aperture ratio. The relations between these four influencing factors and wavelength are analyzed theoretically in this paper. The numerical calculations are done by using Matlab 6.1 software. It is indicated that transmission efficiency decreases as X-ray wavelength increases
which is very important to instruct the structural design.
关键词
Keywords
references
国家自然科学基金委员会.等离子体物理学[M].北京:科学出版社,1994.
丁耀南.我国激光核聚变实验研究概述[J].核物理动态,1995,12(3):21-25.
Henke B L, Gulliksen E M,Davis J C. X-ray interaction: photoabsorption, scattering, transmission and reflection at E=50-30000eV, Z=1-92[J]. Atomic Data and Nuclear Data Tables, 1993,54(2):181-200.
Okamoto Y, Yoshikawa M, Yamaguchi N, et al. Absolute calibration of space and time-resolving flat-field vacuum ultraviolet spectrograph under both P and S polarized light conditions for plasma diagnostics [J]. Rev.Sci.Instrum. 2001,72(12): 4366-4371.
王英华.X光衍射技术基础[M].北京:原子能出版社,1993.
杨福家.原子物理学[M].北京:高等教育出版社,2000.
Henke B L, Yamada H T,Tanaka T J. Pulsed plasma source spectrometry in the 80-8000eV X-ray region[J].Rev.Sci.Instrum, 1983,54(10):1311-1316.