Light-induced desorption of Cs from the Cs-Sb photoemissive cathode

We have confirmed the desorption of Cs atoms from Cs–Sb photocathodes by external irradiation. The desorbed species are estimated as cesium by a work function of the captive filament method. This light-induced desorption is made predominant by the irradiation of infrared light ( h ν<1 eV), but no...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 29; no. 8; pp. 1527 - 1532
Main Authors HIROHATA, T, MIZUSHIMA, Y
Format Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 01.08.1990
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
Cesium
Temperature
Adsorption
Experimental study
Inverse photoemission
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Summary:We have confirmed the desorption of Cs atoms from Cs–Sb photocathodes by external irradiation. The desorbed species are estimated as cesium by a work function of the captive filament method. This light-induced desorption is made predominant by the irradiation of infrared light ( h ν<1 eV), but not by visible light. To explain this phenomenon, the authors have calculated an adiabatic potential diagram of Cs adsorption on a Cs–Sb cathode surface, which safely explains the light-induced desorption.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.29.1527