Characterization of CsI photocathodes at grazing incidence for use in a unit quantum efficiency x-ray streak camera

Autor:	Howard A. Padmore, Eric M. Gullikson, Roger Falcone, D. P. Lowney, P.A. Heimann, A. G. MacPhee
Rok vydání:	2004
Předmět:	Physics Photomultiplier Physics::Instrumentation and Detectors business.industry Streak camera Photon energy Photocathode Detective quantum efficiency Optics Secondary emission Quantum efficiency Atomic physics business Penetration depth Instrumentation
Zdroj:	Review of Scientific Instruments. 75:3131-3137
ISSN:	1089-7623 0034-6748
Popis:	The performance of CsI photocathodes has been characterized for use with grazing incidence soft x rays. The total electron yield and pulsed quantum efficiency of a CsI photocathode has been measured in a reflection geometry as a function of photon energy (100 eV to 1 keV), angle of incidence, and the electric field between the anode and photocathode. The total electron yield and pulsed quantum efficiency increase as the x-ray penetration depth approaches the secondary electron escape depth. Unit quantum efficiency in a grazing incidence geometry is demonstrated. A weak electric-field dependence is observed for the total yield measurements; while no significant dependence is found for the pulsed quantum efficiency. The effect of the pulse height distribution on the detective quantum efficiency is discussed. Theoretical predictions agree accurately with experiment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::27dfa8f161aef2c4ed28a65050a509b6 https://doi.org/10.1063/1.1790558 Zobrazit plný text záznamu