晴朗星空照射下Pd-Ag-O-Cs和Sb-Na-K-Cs光阴极的光电发射
PHOTOEMISSIONS OF Pd-Ag-O-Cs AND Sb-Na-K-Cs PHOTOCATHODES UNDER THE ILLUMINATION OF CLEAR STAR RADIATION
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摘要: 正 1.引言 目前红外夜视仪中的红外变象管用的是Ag-O-Cs光阴极;微光夜视仪中的微光管用的是Sb-Na-K-Cs光阴极。从使用要求来考虑,微光夜视仪是要代替红外夜视仪的。众所周知,Pd-Ag-O-Cs光阴极的光谱灵敏度比Ag-O-Cs光阴极的约大一倍。于是产生这样的问题:能否在红外交象管中用Pd-Ag-O-Cs光阴极代替Ag-O-Cs光阴极,使新的管子能用于利用晴朗星空辐射(即不用红外光源)的微光夜视仪?本文通过计
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Abstract: In this paper, the photoemissions of Pd-Ag-O-Cs and Sb-Na-K-Cs photocathodes under the illumination of clear star radiation are ealculated and compared. From the calcula.ted results, it gives a fine pospect that the Pd-Ag-O-Cs photocathode may be used in low light level night vision. -
E. A. Richard, Advances in Electronics and Electron Physics, Vol. 28B, (1969), p. 661.[2]X. Hou(侯询),Rev. Sci. Instrum., 32(1981), 1487.[3]A. H. Sommer, Photoemissive Materals, Preparation Properties and Uses, John Wiley and Sons Inc., (1986), p. 166. -
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