Lapson L B, Timothy J G
Appl Opt. 1973 Feb 1;12(2):388-93. doi: 10.1364/AO.12.000388.
The photoelectric yields of 2000-A thick samples of MgF(2) and LiF have been measured at wavelengths in the range 1216-461 A. Peak values of 43% and 34%, respectively, were obtained at wavelengths around 550 A at 45 degrees incidence. Coating the cathode of a channel electron multiplier with 3000 A of MgF(2) produced no significant deterioration in the electrical properties and increased the sensitivity by factors of 1.62, 2.76, and 2.60 at wavelengths of 742 A, 584 A, and 461 A, respectively. Since the stability of response of the MgF(2) photocathodes appears to be equal to that of conventional metallic and semiconducting cathodes, it is concluded that MgF(2) would be a practical, high-efficiency photocathode for use in the extreme uv.
已测量了厚度为2000埃的MgF₂和LiF样品在1216 - 461埃波长范围内的光电产额。在45度入射角下，在约550埃波长处分别获得了43%和34%的峰值。用3000埃的MgF₂涂覆通道电子倍增器的阴极，在电性能方面没有显著恶化，并且在742埃、584埃和461埃波长处分别将灵敏度提高了1.62、2.76和2.60倍。由于MgF₂光电阴极的响应稳定性似乎与传统金属和半导体阴极相当，因此得出结论，MgF₂将是一种用于极紫外的实用、高效光电阴极。
