Open AccessPhoton‐stimulated ion desorption from molybdenum oxides following Mo 2 p 3/2 excitation
Author(s) -
Wu Guohua,
Baba Yuji,
Sekiguchi Tetsuhiro,
Shimoyama Iwao
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500017209
Subject(s) - antibonding molecular orbital , ion , desorption , molybdenum , yield (engineering) , auger , resonance (particle physics) , atomic physics , excitation , auger effect , auger electron spectroscopy , analytical chemistry (journal) , chemistry , atomic orbital , electron , materials science , physics , inorganic chemistry , adsorption , organic chemistry , quantum mechanics , chromatography , nuclear physics , metallurgy
Photon‐stimulated ion desorption from solid MoO3 following the Mo 2p 3/2 resonant transition has been investigated. In the XANES spectrum, Mo 2p 3/2 peak is split into two components corresponding to the excitations from Mo 2p 3/2 into the t 2g and eg orbitals. It was observed that the desorption yield of O+ ions at the Mo 2p 3/2 ⇒ e g resonance is higher than that at the Mo 2p 3/2 ⇒ t 2g resonance. The Auger decay spectra reveal that there exist two kinds of spectator Auger decays. The high desorption yield at the 2p 3/2 ⇒ e g resonance is interpreted by the fast breaking of the Mo‐O bond due to the localization of the electrons in the highly antibonding e g .