Open AccessSelective photoemission of Au photocathode
Author(s) -
Zheng Yong,
Shenye Liu,
Zhurong Cao,
Yunfeng Li,
Tao Chen,
Hang Li,
Haiying Zhang,
Ming Chen
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.4967
Subject(s) - photocathode , ultraviolet , microchannel plate detector , detector , materials science , cathode , optoelectronics , microchannel , photoelectric effect , atomic physics , alkali metal , physics , optics , nanotechnology , chemistry , electron , quantum mechanics
A method for measuring the ultraviolet spectrum characteristic of Au photocathode has been put forward. Making use of the high gain characteristic of microchannel plate (MCP) and ultraviolet light, the frequency response of Au cathode has been studied by measuring the output current of Au coated MCP detector directly. Through measuring the response current of Au coated MCP detector between 200—340 nm, the selective photoemission of Au has been found, which had been found only for alkali metals. And the selective peak is at 5.72 eV, which can be explained by quantum mechanics theory.