本文關(guān)鍵詞： 最佳工作電壓 防離子反饋MCP MCP電壓 陰極電壓　出處：《應(yīng)用光學(xué)》2017年03期 　論文類型：期刊論文

【摘要】：帶防離子反饋膜的微通道板(micro-channel plate,MCP)是負(fù)電子親和勢光電陰極微光像增強(qiáng)器的關(guān)鍵部件之一,其工作狀態(tài)對負(fù)電子親和勢光電陰極微光像增強(qiáng)器的性能有嚴(yán)重影響,通過對無膜MCP及鍍有不同厚度防離子反饋膜的MCP在不同陰極電壓下、不同MCP電壓下增益的測試與分析,最終確定出防離子反饋MCP的最佳工作電壓:(1)對于負(fù)電子親和勢光電陰極像增強(qiáng)器用無膜MCP,其最佳工作電壓為:當(dāng)陰極電壓大于一定值V_(c1)時,MCP增益幾乎不變,說明此時的陰極電壓V_(c1)為無膜MCP的最佳工作電壓;當(dāng)MCP電壓為某一特定值V_(m1)(陰極電壓為大于V_(c1)的任一值)值時,MCP出現(xiàn)增益,但增益值很低,當(dāng)MCP電壓大于(V_(m1)+100V)值時,MCP增益較大(大于20 000),可認(rèn)為板壓為(V_(m1)+100V)值為無膜MCP最佳工作板壓;(2)對于同種材料的帶膜MCP,其最佳工作電壓為陰極電壓Vc=無膜MCP的最佳陰極電壓V_(c1)與防離子反饋膜的閾值電壓的代數(shù)和,MCP電壓為Vm(V_(m1)+100V),具體值應(yīng)根據(jù)防離子反饋MCP增益值的線性工作區(qū)來確定。該文的研究對防離子反饋MCP的最佳工作電壓的確定及對負(fù)電子親和勢光電陰極像增強(qiáng)器性能的提高具有重要的意義。
[Abstract]:Micro-channel plate with anti-ion feedback membrane is one of the key components of negative electron affinity photocathode low-light image intensifier. Its working state has serious influence on the performance of negative electron affinity photocathode photocathode low light image intensifier. By means of film free MCP and MCP with different thickness ion proof feedback film, under different cathode voltage. The gain at different MCP voltages is measured and analyzed, and the optimal working voltage of MCP is determined. The best working voltage is: 1) for negative electron affinity potential photocathode image intensifier, there is no film MCP. The optimum operating voltage is as follows: when the cathode voltage is greater than a certain value, the gain of MCP is almost unchanged, which shows that the cathode voltage V _ T _ c _ 1) is the best working voltage of MCP without film. A gain occurs when the MCP voltage is any value of a particular value, V _ S _ T _ m _ (1) (the cathode voltage is greater than V _ s / c _ (1)), but the gain value is very low. When the voltage of MCP is greater than the value of 1 / 100V), the gain of MCP is larger (> 20 000). It can be considered that the plate pressure is the best working plate pressure of MCP without membrane. (2) for the same material, the optimal working voltage is the cathodic voltage V _ c = the best cathode voltage V _ (C _ 1) without film MCP) and the algebraic sum of the threshold voltage of the anti-ion feedback film. The MCP voltage is VmCoV 1) 100V). The specific value should be determined according to the linear working area of the gain value of the antiion feedback MCP. In this paper, the determination of the optimum working voltage of the ion proof feedback MCP and the performance of the negative electron affinity photocathode image intensifier are studied. Improvement is of great significance.
【作者單位】： 微光夜視技術(shù)重點實驗室;北方夜視科技集團(tuán)有限公司;
【分類號】：TN144
【正文快照】： 引言MCP是將具有二次電子發(fā)射的單通道式電子倍增器采用矩陣排列、粘合、拉絲、切片等工藝制成的大面陣多像素電子倍增器件,像素數(shù)以百萬計,具備對電子及其它粒子二維密度分布進(jìn)行高鑒別率倍增成像功能,因此高增益是MCP的主要技術(shù)特色之一[1-2]。MCP增益主要取決于MCP端面電勢，

本文編號：1482265