MCP噪聲因子的理論分析
THEORETICAL ANALYSIS OF MCP NOISE FACTOR
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摘要: 本文從理論上分析了MCP對(duì)輸出信號(hào)信噪比的影響,推導(dǎo)了噪聲因子的表達(dá)式,作了相應(yīng)的數(shù)值計(jì)算。根據(jù)計(jì)算結(jié)果指出了降低MCP噪聲因子的有效途徑。
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關(guān)鍵詞:
- MCP; 信噪比; 噪聲因子
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,韋亞一,光電子技術(shù),1992年,第1期,第59-64頁(yè). -
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