| 天鹅绒与碳纳米管阴极强流脉冲发射特性 |
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| 引用本文： | 谌怡,夏连胜,张篁,杨安民,刘星光,廖庆亮. 天鹅绒与碳纳米管阴极强流脉冲发射特性[J]. 强激光与粒子束, 2012, 24(4): 957-962. DOI: 10.3788/HPLPB20122404.0957 |
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| 作者姓名： | 谌怡 夏连胜 张篁 杨安民 刘星光 廖庆亮 |
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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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| 基金项目： | 新金属材料国家重点实验室基金项目 |
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| 摘 要： | 在2 MeV直线感应加速器注入器平台上开展了天鹅绒阴极与碳纳米管阴极的强流脉冲发射特性综合实验。研究结果表明:天鹅绒阴极与碳纳米管阴极均具有强流脉冲发射性能，在1.61 MV的二极管电压下，天鹅绒阴极与碳纳米管的发射电流密度分别为84，108 A/cm2；启动时间分别为21，40 ns；放气量分别为0.29，0.91 PaL;放出气体分子数目与发射电子数目之比分别为64，225;两种冷阴极强流脉冲发射时的放气质谱相似。
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| 关 键 词： | 天鹅绒阴极 碳纳米管阴极 强流脉冲发射 放气 |
| 收稿时间： | 2011-10-24 |
Intense pulsed emission of velvet and carbon nanotube cathodes |
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| Shen Yi , Xia Liansheng , Zhang Huang , Yang Anmin , Liu Xingguang , Liao Qingliang. Intense pulsed emission of velvet and carbon nanotube cathodes[J]. High Power Laser and Particle Beams, 2012, 24(4): 957-962. DOI: 10.3788/HPLPB20122404.0957 |
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| Authors: | Shen Yi Xia Liansheng Zhang Huang Yang Anmin Liu Xingguang Liao Qingliang |
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| Affiliation: | 1.Institute of Fluid Physics,CAEP,P.O.Box 919-106,Mianyang 621900,China;2.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | Experiments on intense pulsed emission properties of velvet and carbon nanotube(CNT) cathodes have been conducted on the 2 MeV linear induction accelerator injector. The results show that both velvet and CNT cathodes can emit intense electron beams under 1.61 MV pulsed high voltage. The intense electron beams are 84 and 108 A/cm2 in current density, and the turn-on times are 21 and 40 ns, respectively. The amount of outgassing is estimated to be 0.29 and 0.91 Pa·L, and the number of outgassed molecules per electron is 64 and 225 for velvet and CNT cathodes. Moreover, the outgassing mass spectra of the two cathodes are similar to each other. |
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| Keywords: | velvet cathode carbon nanotube cathode intense pulsed emission outgassing |
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