| 大直径钪酸盐阴极发射特性 |
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| 引用本文： | 杨安民, 夏连胜, 王辉, 等. 大直径钪酸盐阴极发射特性[J]. 强激光与粒子束, 2011, 23(06). |
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| 作者姓名： | 杨安民 夏连胜 王辉 余志强 李季 石金水 张篁 刘星光 刘云龙 潘海峰 |
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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;;;2.中国电子科技集团公司 第十二研究所, 北京 1 00039 |
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| 摘 要： | 为获得kA级热发射电子束，研制了直径为100 mm钪酸盐热阴极组件，并建立了适应大面积热阴极实验环境的2 MV 注入器试验平台。实验在二极管真空3.7×10-5 Pa、二极管电压1.95 MV、脉宽120 ns（FWHM）、阴极温度1 120 ℃时，获得最大收集电流1 038 A，发射电流密度约13 A/cm2。实验结果表明，工作状态下阴极发射能力与激活温度、系统真空度关系密切。
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| 关 键 词： | 直线感应加速器 阴极组件 二极管 电流密度 |
Emission characteristic of scandate cathode with large diameter |
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| yang anmin, xia liansheng, wang hui, et al. Emission characteristic of scandate cathode with large diameter[J]. High Power Laser and Particle Beams, 2011, 23. |
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| Authors: | yang anmin xia liansheng wang hui yu zhiqiang li ji shi jinshui zhang huang liu xingguang liu yunlong pan haifeng |
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| Affiliation: | 1. Institute of Fluid Physics,CAEP,P.O.Box 919-106,Mianyang 621900,China;;;2. The 12th Research Institute of China Electronics Technology Group Corporation,Beijing 100668,China |
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| Abstract: | In order to acquire Kilo-Ampere level emission current, a 100 mm diameter scandate cathode was manufactured. A 2 MV injector test stand was established with a large area thermionic cathode. A 1 038 A emission current was produced with a diode voltage 1.95 MV, pulse width 120 ns(FWHM), cathode temperature 1 120 ℃.The emission current density was 13 A/cm2. The results indicate that the ability of cathode emission relies on diode vacuum and cathode activation temperature. |
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| Keywords: | linear induction accelerator thermionic dispenser cathode diode current density |
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