| 直线感应加速器用光阴极实验研究 |
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| 引用本文： | 张篁, 陈德彪, 江孝国, 等. 直线感应加速器用光阴极实验研究[J]. 强激光与粒子束, 2010, 22(03). |
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| 作者姓名： | 张篁 陈德彪 江孝国 夏连胜 刘星光 谌怡 章林文 |
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| 作者单位： | 1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621 900 |
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| 摘 要： | 通过适当地改造2 MeV注入器实验平台，使系统具备了开展光阴极研究的能力，主要的改动有：将观察窗材料改为石英，增加266 nm固体激光器，对原有的时序控制方式进行修改以满足同步触发方面的要求。研究的阴极材料为含钪储备式热阴极，实验中最高加热到了740 ℃，观测到了光电发射和光致等离子体发射现象，最大的激光功率密度为1.3 MW/cm2，最大发射电流密度约为16 A/cm2，光电发射的量子效率约为0.05‰。
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| 关 键 词： | 直线感应加速器 光阴极 固体激光器 储备式热阴极 等离子体 |
Experimental research on photocathode for linear induction accelerator |
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| zhang huang, chen debiao, jiang xiaoguo, et al. Experimental research on photocathode for linear induction accelerator[J]. High Power Laser and Particle Beams, 2010, 22. |
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| Authors: | zhang huang chen debiao jiang xiaoguo xia liansheng liu xingguang chen yi zhang linwen |
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| Affiliation: | 1. Institute of Fluid Physics,CAEP,P.O.Box 919-106,Mianyang 621900,China |
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| Abstract: | A modified 2 MeV injector was used to study the photocathode for linear induction accelerators, which adopted a frequency-quadrupled Nd:YAG laser (266 nm) and a quartz window. Its trigger system was improved to realize output synchronization between the pulsed power system and the laser. A scandate cathode was investigated and the maximal cathode temperature was about 740 ℃ in the experiments. Photoemission and plasma emission caused by laser were observed. The maximal laser power density was about 1.3 MW/cm2, the maximal emission current density was about 16 A/cm2, and the quantum efficiency of photoemission was about 0.05‰. |
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| Keywords: | linear induction accelerator photocathode solid laser dispenser cathode plasma |
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