Design of optical system for fusion reaction-rate measurement

被引：1
|
作者：
Yan, Ya-Dong [1 ]
He, Jun-Hua [1 ]
机构：
[1] Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2012年 / 20卷 / 11期
关键词：
Fusion reaction-rate; Neutron; Optical design; Reaction rate measurement; Temporal dispersion;
D O I：
10.3788/OPE.20122011.2389
中图分类号：
学科分类号：
摘要：
Based on a plastic scintillator and an optic streak camera, a measuring system for fusion reaction-rate was designed, then the working princile and design method of the measuring system were addressed in detail. A piece of fused silica window was set just behind the plastic scintillator to protect optical elements from darkening after a long time exposure in scatted X rays and the ultraviolet crystals and other ultraviolet glass were selected to ensure the high system transmission. Furthermore, the image plane of the optical system was put onto a photocathode of the streak camera directly to remove the aperture non-matching of input optic system of the streak camera. Finally, a field mirror was put on the first image plane to reduce the max diameter of optical element from 160 mm to 120 mm. The designed optical system has a total length of 2 660 mm, magnification of 3:1 and its final lens is F/0.667 and transmission is 67%. Moreover, the time dispersion of the optical system is less than 7.3 ps. These results meet the experimental needs of different neutron yields and good experimental results have been obtained in a laser targeting experiment.
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收藏
页码：2389 / 2394
页数：5
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