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Volume 30 Issue 5
Dec.  2010
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Huang Tao, Yang Zhong-ha, Jin Yong-bing, Jin Xiao-lin, Hu Quan, Qin Yu-kun . The Emission Model of Secondary Electron in Multistage Depressed Collector CAD[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1247-1250. doi: 10.3724/SP.J.1146.2006.01733
Citation: Huang Tao, Yang Zhong-ha, Jin Yong-bing, Jin Xiao-lin, Hu Quan, Qin Yu-kun . The Emission Model of Secondary Electron in Multistage Depressed Collector CAD[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1247-1250. doi: 10.3724/SP.J.1146.2006.01733

The Emission Model of Secondary Electron in Multistage Depressed Collector CAD

doi: 10.3724/SP.J.1146.2006.01733
  • Received Date: 2006-11-09
  • Rev Recd Date: 2007-03-21
  • Publish Date: 2008-05-19
  • The Multistage Depressed Collector (MDC) is widely used to improve the efficiency of microwave amplifiers. The emission of secondary electron in MDC has important influence on the efficiency. In this paper, the emission models of true secondary electron, elastic and inelastic reflected electron are discussed, and the corresponding emission ratio, angle and energy distribution are deeply analyzed. Moreover, the convergence criteria in MDC simulation is discussed, when the secondary electron are considered. The results of the analysis and discussion are used in the CAD software about MDC design, and the effects of secondary electron on the efficiency of MDC are quantitatively analyzed.
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  • 赵玉清. 电子束离子束技术. 西安: 西安交通大学出版社,2002: 180-183.[2]傅慈海, 杨英杰. 物理电子技术原理. 广州: 华南理工大学出版社, 1991, 第3-第4 章.[3]贺庆, 寇建勇, 孙瑜等. 多级降压收集极中次级电子的研究.真空电子技术, 2004, 1: 25-27.He Q, Kou J Y, and Sun Y, et al.. Study on secondary electronin multistage depressed collector, Vacuum Electronics, 2004, 1:25-27.[4]Vaughan J R M. A new formula for secondary emission yield[J].IEEE Trans. on ED.1989, 36(9):1963-1967[5]Vaughan J R M. Secondary emission formulas. IEEE Trans.on ED, 1993, 40(4): 830.[6]Petillo J, Eppley K, and Panagos D, et al.. The MICHELLEthree-dimensional electron gun and collector modeling tool:theory and design. IEEE Trans. on PS, 2002, 30(3):1238-1264.[7]Valfells A, Singh A, and Kolander M J, et al.. Advancementsin codes for computer aided design of depressed collectors andtracing of backscattered electrons-part 2: improvements inmodeling of the physics of secondary electron emission andbackscattering. IEEE Trans. on PS, 2002, 30(3): 1271-1275.[8]Reimer L. Scanning electron microscopy, physics of imageformation and microanalysis. New York: Springer-Verlag,1985: 135-169.[9]Werner U, Bethge H, and Heydenreich J. An analytic modelof electron backscattering for the energy range of 10-100keV[J].Ultramicroscopy.1982, 8(1):417-428[10]黄桃, 杨中海, 胡权等. TWTCAD多级降压收集极CAD设计与实现. 中国电子学会真空电子学分会第15 届学术年会, 昆明, 2005: 320-323.
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