Preparation of ion barrier film of MCPwith e-beam evaporation and its properties analysis
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摘要: 为了进行MCP超薄防离子反馈膜的性能评价研究,并使这种膜层具有良好离子阻挡能力,利用电子束蒸发方法,在微通道板(MCP)输入面上制备一种超薄Al2O3防离子反馈膜,其膜层厚度为2 nm时仍连续致密。通过对Al2O3防离子反馈膜的电子透过特性测试,给出2 nm及4 nm厚防离子反馈膜对应的死区电压分别约为150 V及200 V;利用Monte-Carlo法模拟分析了Al2O3防离子反馈膜的离子阻挡特性,2 nm及4 nm厚Al2O3防离子反馈膜对碳离子等的阻挡率分别高于40%及86%,另外对有无膜的MCP电特性进行测试,可以看出镀2 nm及4 nm厚的膜后,MCP电子增益分别降低了51%及81%。Abstract: In order to study the properties of the ion barrier film of microchannel plate(MCP), the Al2O3 ion barrier film was successfully fabricated on the input-face of MCP by the e-beam evaporating method.The optimal thickness of the ion barrier film was 2 nm. After measurement,the electron transmittance characteristics through the ion barrier film for unfilmed and filmed MCPs were shown. The relationship between the thickness of the ion barrier film and the dead voltage was given, the dead voltage of Al2O3 ion barrier film with the thickness of 2 nm and 4 nm was 150 V and 200 V, respectively. The stopping function on incident ions was analyzed by Monte-Carlo method, the barrier rate for 2 nm and 4 nm Al2O3 ion film was above 40% and 86% , respectively .Besides, the electrical characteristics of unfilmed MCP were tested, and the results showed that with the Al2O3 ion barrier film of 2 nm and 4 nm, the electron gain of MCP reduced by 51% and 81%,respectively.
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Keywords:
- microchannel plate /
- Al2O3 /
- ion barrier film /
- e-beam evaporating
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[1]向世明,倪国强.光电子成像器件原理[M].北京:国防工业出版社,1999.
XIANG Shi-ming, NI Guo-qiang. The principle of photoelectronic imaging devices[M]. Beijing: National Defence Press, 1999. (in Chinese)
[2]石峰,程宏昌,贺英萍,等.MCP输入电子能量与微光像增强器信噪比的关系[J].应用光学,2008,29(4): 562-564.
SHI Feng, CHENG Hong-chang, HE Ying-ping, et al. Optimization for signaltonoise ratio of lowlight level image intensifier[J]. Journal of Applied Optics, 2008,29(4):562-564.(in Chinese with an English abstract)
[3]姜德龙,向嵘,吴奎,等.SiO2 防离子反馈膜的制备及其性能[J].发光学报,2008,29(6):1096-1100.
JIANG De-long, XIANG Rong, WU Kui, et al. Preparation and characteristics of SiO2 ionpreventive feedback thin film[J]. Chin. J. Lumin.,2008,29(6): 1096-1100. (in Chinese with an English abstract)
[4]姜德龙,刘庆飞,李野,等.微通道板离子壁垒膜及其对入射离子的阻止作用[J].发光学报,2006,27(6): 1015-1020.
JIANG De-long, LIU Qing-fei, LI Ye, et al. MCP ion barrier film and its stopping function on incident ions [J]. Chin. J. Lumin.,2006,27(6):10151020.(in Chinese with an English abstract)
[5]朱宇峰,张太民,聂晶,等.低磁控溅射率MCP 防离子反馈膜工艺研究[J].应用光学,2008,29(3):360-363.
ZHU Yu-feng, ZHANG Tai-min, NIE Jing,et al. Preparation of ionfeedback barrier film on MCP [J]. Journal of Applied Optics, 2008,29(3):360-363. (in Chinese with an English abstract)
[6]李野,姜德龙,向嵘.微通道板SiO2 防离子反馈膜技术研究[J].电子学报,2008,36(12):2400-2404.
LI Ye, JIANG De-long, XIANG Rong. Technology investigation on SiO2 ion barrier film of microchannel plate[J]. Acta Eletronica Sinica, 2008,36(12):2400-2404. (in Chinese with an English abstract)
[7]闫金良.微通道板离子阻挡膜[J].应用光学,1996,17 (1):12-14.
YAN Jin-liang. Microchannel plate ion barrier film [J]. Journal of Applied Optics, 1996,17(1):12-14. (in Chinese with an English abstract)
[8]顾培夫.薄膜技术[M].浙江:浙江大学出版社,1990.
Gu Pei-fu. Thin film technol[M]. Zhejiang:Zhejiang University Press,1990. (in Chinese)
[9]李云奇.真空镀膜技术与设备设计安装及操作维护使用手册[M].北京:化学工业出版社,2006.
LI Yun-qi. Uacuum technol[M]. Beijing: Chamical Industry Press, 2006. (in Chinese)
[10]李晓峰,张景文,高鸿楷,等.三代管MCP 离子阻挡膜研究[J].光子学报,2001,30(12):1496-1499.
LI Xiao-feng, ZHANG Jing-wen, GAO Hongkai, et al. Ion barrier of MCP in the third generation image intensifier[J]. Acta Photonica Sinica, 2001,30(12): 1496-1499. (in Chinese with an English abstract)
[11]刘术林,董煜辉,孙建宁,等.微光像增强器信噪比与MCP 电压关系[J].应用光学,2009,30(4): 650-653.
LIU Shu-lin, DONG Yu-hui, SUN Jian-ning, et al. Relation between signaltonoise ratio of LLL image intensifier voltage of MCP[J]. Journal of Applied Optics, 2009,30(4):650-653. (in Chinese with an English abstract)
[12]SINOR T W, ESTRERA J P. An analysis of electron scattering in thin dielectric films used as ion barriers in generation Ⅲ image tube[J]. SPIE, 2003,4796:23-32.
[13]HERTEL R J. Signal and noise properties proximity focused image tube[J]. SPIE, 1989,1155:332-342.
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