Open AccessPreliminary experimental research of electron emission characteristics on surface area of two kinds of electrodes
Author(s) -
Su Zhaofeng,
Hu Yang,
Pengfei Zhang,
Lai Dingguo,
Jianming Guo,
Ren Shuqing,
Qiang Wang
Publication year - 2014
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.63.106801
Subject(s) - materials science , electrode , electron , polishing , surface roughness , surface finish , secondary emission , coating , atomic physics , composite material , physics , quantum mechanics
The principle of measuring electron emission threshold of surface area metal electrode is presented. The measurement system of electron emission thresholds of two electrodes is developed. The electron emission characteristics of materials with different roughness degrees or Cr2O3 coating-deposit 40 um are measured in “Chenguang” accelerator. The results show that polishing can suppress electron emission. The higher the roughness degree of material, the lower the electron emission threshold is. Material coated with Cr2O3 has higher electron emission threshold than polished material.