间隙长度对有效场强的影响

[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials Pub Date : 1991-07-08 DOI:10.1109/ICPADM.1991.172194

A. Kojima, S. Sato, N. Iijima, M. Sone, H. Mitsui

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引用次数: 1

摘要

采用微通道板(MCP)测量高真空(1.3*10/sup -5/ Pa)下1*10/sup -19 ~ 1*10/sup -14/ A范围内的微小发射电流。通过Fowler-Nordheim图发现，在任意间隙长度下，初始电子发射的有效场强基本恒定在10/sup 7/ ~ 10/sup 8/ V/cm之间。有效场强保持在10/sup 7/和10/sup 8/ V/cm之间，与任何间隙长度下的电流无关。在此基础上，提出了一种显示微小投影选择的模型。为了验证该模型，使用了一个MCP磷阳极。结果发现，当电压升高时，所选择的发射电子的微小投影会受热熔化。

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Effect of gap length on effective field strength

A micro-channel plate (MCP) was used to measure the minute emission current within the range of 1*10/sup -19/ A to 1*10/sup -14/ A in a high vacuum (1.3*10/sup -5/ Pa). By a Fowler-Nordheim plot, it is found that the effective field strength for initial electron emission is mostly constant between 10/sup 7/ and 10/sup 8/ V/cm under any gap length. The effective field strength is held constant between 10/sup 7/ and 10/sup 8/ V/cm, independent of the current under any gap length. With this result, a model which shows the choice of minute projection is suggested. In order to certify this model, an MCP phosphor-anode is used. As a result, it is found that the minute projections which emit electrons melt with heat and are chosen when the voltage rises.<>

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[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials

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