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Proceedings Paper

Study of bi-alkali photocathode growth on glass by X-ray techniques for fast timing response photomultipliers
Author(s): Junqi Xie; Marcel Demarteau; Robert Wagner; Miguel Ruiz-Oses; Xue Liang; Ilan Ben-Zvi; Klaus Attenkofer; Susanne Schubert; John Smedley; Jared Wong; Howard Padmore; Arthur Woll
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Paper Abstract

Bi-alkali antimonide photocathode is an essential component in fast timing response photomultipliers. Real-time in-situ grazing incidence x-ray diffraction and post-growth x-ray reflectivity measurement were performed to study the photocathode deposition process on glass substrate. Grazing incidence x-ray diffraction patterns show the formation of Sb crystalline, dissolution of crystalline phase Sb by the application of K vapor and reformation of refined crystal textures. XRR result exhibits that the film thickness increases ~ 4.5 times after K diffusion and almost have no change after Cs diffusion. Further investigation is expected to understand the photocathode growth process and provide guidelines for photocathode development.

Paper Details

Date Published: 7 March 2014
PDF: 6 pages
Proc. SPIE 8982, Optical Components and Materials XI, 89821O (7 March 2014); doi: 10.1117/12.2037367
Show Author Affiliations
Junqi Xie, Argonne National Lab. (United States)
Marcel Demarteau, Argonne National Lab. (United States)
Robert Wagner, Argonne National Lab. (United States)
Miguel Ruiz-Oses, Stony Brook Univ. (United States)
Xue Liang, Stony Brook Univ. (United States)
Ilan Ben-Zvi, Stony Brook Univ. (United States)
Klaus Attenkofer, Brookhaven National Lab. (United States)
Susanne Schubert, Brookhaven National Lab. (United States)
Helmholtz-Zentrum (Germany)
John Smedley, Brookhaven National Lab. (United States)
Jared Wong, Lawrence Berkeley National Lab. (United States)
Howard Padmore, Lawrence Berkeley National Lab. (United States)
Arthur Woll, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 8982:
Optical Components and Materials XI
Michel J. F. Digonnet; Shibin Jiang, Editor(s)

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