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The cascade effect of cathode spots from vacuum micro-arcing has been observed by micro-channel plate (MCP) imager in divect current mode. The spots-track on MCP surface can be drawn out as a multiform dog-leg path,and betweencenters of spots is 200—300 μm. The first spot is always the lucida,and its intensity is about decuple of its sub-spots. The intensity between cascade sub-spots is at the same level,and sub-spots are nondestructive for MCP cathode surface. The experiments showed that arcing of sub-spots depends on emission of the first spot.
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Keywords:
- cathode spot /
- micro-arc cascade effect /
- micro-channel plate imager
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[2] [2]Boxman R L,Goldsmith S 1997 IEEE Trans. Plasma Sci. 25 1174
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[10] ]Kikenny J D 1991 Laser and Particle Beams 9 49
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[13] ]He Z W,Zhen C M,Lan W,Wang Y Y 2003 Acta Phys. Sin. 52 3130 (in Chinese) [何志巍、甄聪棉、兰伟、王印月 2003 物理学报 52 3130]
[14] ]Li J J,Wu H H,Long B Y,Lü X Y,Hu C Q,Jin Z S 2005 Acta Phys. Sin. 54 1447 (in Chinese) [李俊杰、吴汉华、龙北玉、吕宪义、胡超权、金曾孙 2005 物理学报 54 1447]
[15] ]Wu H H,Long B H,Lü X Y,Wang J B,Jin Z S 2005 Acta Phys. Sin. 54 1697 (in Chinese) [吴汉华、龙北红、吕宪义、汪剑波、金曾孙 2005 物理学报 54 1697]
[16] ]Wu H H,Long B H,Long B Y,Tang Y G,Chang H,Bai Y Z 2007 Acta Phys. Sin. 56 6537 (in Chinese) [吴汉华、龙北红、龙北玉、唐元广、常鸿、白亦真 2007 物理学报 56 6537]
[17] ]Dyke W P,Trolan J K,Martin E E 1953 Phys. Rev. 91 1043
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[1] [1]Beilis I I 2001 IEEE Trans. Plasma Sci. 29 657
[2] [2]Boxman R L,Goldsmith S 1997 IEEE Trans. Plasma Sci. 25 1174
[3] [3]Jüttner B 2001 J. Phys. D: Appl. Phys. 34 R103
[4] [4]Puchkarev V F,Bochkarev M B 1994 J. Phys. D: Appl.Phys. 27 1214
[5] [5]Daybelge U 1985 Phys. Fluids 28 312
[6] [6]Yang J,Liu W Y,Zhu G Q,Mao G W 2007 Acta Phys. Sin. 56 366 (in Chinese) [杨涓、刘文一、朱国强、毛根旺 2007 物理学报 56 366]
[7] [7]Zheng J,Li Z C,Zhang H,Yu C X,Yabuuchi T, Tanaka K 2007 Chin. Phys. 16 3009
[8] [8]Zhang Z Y,Lu X C, Luo J B 2007 Chin. Phys. 16 3790
[9] [9]Xu D L 1990 High Speed Camera of the Imaging Tube (Beijing: Science Press) p131 (in Chinese) [徐大纶 1990 变像管高速摄影(北京: 科学出版社)第131页]
[10] ]Kikenny J D 1991 Laser and Particle Beams 9 49
[11] ]Cao Z R,Ding Y K,Zhang H Y,Bai X H,Liu B Y,Bai Y L 2007 High Power Laser Part. Beams 19 321 (in Chinese) [曹柱荣、丁永坤、张海鹰、白晓红、刘百玉、白永林 2007 强激光与粒子束 19 321]
[12] ]Lafferty J M 1980 Vacuum Arc Theory and Application (New York: John Wiley and Sons. Inc.) p230
[13] ]He Z W,Zhen C M,Lan W,Wang Y Y 2003 Acta Phys. Sin. 52 3130 (in Chinese) [何志巍、甄聪棉、兰伟、王印月 2003 物理学报 52 3130]
[14] ]Li J J,Wu H H,Long B Y,Lü X Y,Hu C Q,Jin Z S 2005 Acta Phys. Sin. 54 1447 (in Chinese) [李俊杰、吴汉华、龙北玉、吕宪义、胡超权、金曾孙 2005 物理学报 54 1447]
[15] ]Wu H H,Long B H,Lü X Y,Wang J B,Jin Z S 2005 Acta Phys. Sin. 54 1697 (in Chinese) [吴汉华、龙北红、吕宪义、汪剑波、金曾孙 2005 物理学报 54 1697]
[16] ]Wu H H,Long B H,Long B Y,Tang Y G,Chang H,Bai Y Z 2007 Acta Phys. Sin. 56 6537 (in Chinese) [吴汉华、龙北红、龙北玉、唐元广、常鸿、白亦真 2007 物理学报 56 6537]
[17] ]Dyke W P,Trolan J K,Martin E E 1953 Phys. Rev. 91 1043
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