19 November 1993 Progress on high-efficiency photocathodes for soft x-ray, EUV, and FUV photon detection
Author Affiliations +
Abstract
We report on progress in the development of high quantum detection efficiency photocathodes for microchannel plate based photon detectors to increase soft X-ray, EUV and FUV response. Initial investigations of NaBr, KI and CsBr opaque photocathodes are discussed. All show QDE's of approximately 40% in the 300 - 1000 angstroms regime, and QDE > 60% at approximately 100 angstroms. KI also shows high QDE, approximately 60%, for soft X-rays (approximately 11 angstroms). Photoelectron energy and number distributions are also presented. Lifetest measurements on KBr and CsBr photocathodes show good long term stability for storage in dry nitrogen. A co-evaporated photocathode is also evaluated.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel R. Marsh, Oswald H. W. Siegmund, Joseph M. Stock, "Progress on high-efficiency photocathodes for soft x-ray, EUV, and FUV photon detection", Proc. SPIE 2006, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IV, (19 November 1993); doi: 10.1117/12.162830; https://doi.org/10.1117/12.162830
PROCEEDINGS
8 PAGES


SHARE
Back to Top