Open AccessSurface Compositional Studies of Mircochannel Plates During Hydrogen Reduction by XPS
Author(s) -
Jinsheng Jia,
Yang Zhang,
Yong Sun,
Xian Zhang,
Yun Wang,
Lei Zhang,
Juan Liu,
Chen Wang,
Zhiheng Fan
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/612/3/032110
Subject(s) - x ray photoelectron spectroscopy , barium , alkali metal , hydrogen , inorganic chemistry , silicon , valence (chemistry) , materials science , metal , silicate , oxygen , alkaline earth metal , magnesium , chemistry , analytical chemistry (journal) , chemical engineering , metallurgy , chromatography , organic chemistry , engineering
Lead silicate glasses are currently the most employed glasses for microchannel plates (MCP) and other applications. X-ray photoelectron spectroscopy was used to determine the distribution and variation of surface composition of lead silicate glasses during hydrogen reduction. The results showed that the binding energy of silicon, sodium, potassium, magnesium, barium and cesium did not change. However, the content of metal elements is gradually increased increases, while the alkali metal ions and alkaline earth metal ions migrate to the surface. At the same time, the bridge oxygen and non-bridge oxygen content also changed. All the changes of valence and content of elements on glass surface eventually lead to the change of electrical properties of MCPs.