Abstract
Previously we have reported pulse-counting detection efficiencies measured for CsI-coated microchannel plate (MCP) detectors (two-stage chevron configuration with a single collecting anode) to be 15–20% near Lyman-α (1216 Å), compared to typical 65% quantum yields of opaque CsI photocathodes. To investigate the possibility that an improvement in quantum yield could result from use of MCPs with a bias angle of ~25°, instead of 8° as used previously, we repeated our measurements with new MCPs having the larger bias angle. No significant improvement in detection efficiency was achieved; the new detector tests still yielded maximum efficiencies of the order of 20% near 1216 Å.
© 1988 Optical Society of America
Full Article | PDF ArticleMore Like This
George R. Carruthers
Appl. Opt. 26(14) 2925-2930 (1987)
Richelieu Hemphill, Jerry Edelstein, and Doug Rogers
Appl. Opt. 36(7) 1421-1426 (1997)
Oswald H. W. Siegmund, D. E. Everman, John V. Vallerga, and Michael Lampton
Appl. Opt. 27(8) 1568-1573 (1988)