MCP噪声因子的理论分析
THEORETICAL ANALYSIS OF MCP NOISE FACTOR
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摘要: 本文从理论上分析了MCP对输出信号信噪比的影响,推导了噪声因子的表达式,作了相应的数值计算。根据计算结果指出了降低MCP噪声因子的有效途径。
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关键词:
- MCP; 信噪比; 噪声因子
Abstract: Based on the theoretical analysis, the formula of MCP noise taecror is suggested. The results of numerical calculation show that the MCP noise can be reduced by increasing the yield of secondary electrons at MCP entrance. Accroding to this results, the possibility of reducing the noise factor by depositing certain alka lihalide compounds at the entrance of the MCP channels is discussed. -
H.[2]Pollehn et al.,Advancea in Eleclronics and Eleccronic Physics, A40, 21 (1976).[3]A. J. Guest, Acta Electronics, 14 (1971) 1, 99-110.[4]H. Bruining, Physics and Applications of Secondary Electron Emission, Springer-Verlag,(1954),pp.120-140.[5]N. B. Leonov et al., Sov. J. Opt. Technol. 48 (1981) 8, 740-743.[6]陶兆民,韦亚一,光电子技术,1992年,第1期,第59-64页. -
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