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Proceedings Paper

A study of the activation technique of GaAs:Cs-O NEA photocathodes
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Paper Abstract

In this paper, a large activation and analysis system is introduced , which consists of automatic spectral response recording equipment, x-ray photoelectron spectrometer and ultrahigh vacuum chamber. Then, activation and on-line spectral response measurement are described. For the first time, on-line measured spectral response curves of GaAs:Cs-O NEA photocathodes are presented. These curves indicate the typical variation in spectral response caused by the deposition of cesium and oxygen. By the way of comparing and analyzing those curves, some valuable data obtained which are helpful in investigating the mechanism of the activation.

Paper Details

Date Published: 5 February 2003
PDF: 8 pages
Proc. SPIE 4796, Low-Light-Level and Real-Time Imaging Systems, Components, and Applications, (5 February 2003); doi: 10.1117/12.450855
Show Author Affiliations
Zhiyuan Zong, Nanjing Univ. of Science and Technology (China)
Yunsheng Qian, Nanjing Univ. of Science and Technology (China)
Benkang Chang, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4796:
Low-Light-Level and Real-Time Imaging Systems, Components, and Applications
C. Bruce Johnson; Divyendu Sinha; Phillip A. Laplante, Editor(s)

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