QUENCHING OF THE DISSOCIATIVE ELECTRON-ATTACHMENT RESONANCES OF O2 PHYSISORBED ON AMORPHOUS ICE

Citation
Ma. Huels et al., QUENCHING OF THE DISSOCIATIVE ELECTRON-ATTACHMENT RESONANCES OF O2 PHYSISORBED ON AMORPHOUS ICE, Chemical physics letters, 210(4-6), 1993, pp. 340-346
Citations number
50
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
00092614
Volume
210
Issue
4-6
Year of publication
1993
Pages
340 - 346
Database
ISI
SICI code
0009-2614(1993)210:4-6<340:QOTDER>2.0.ZU;2-S
Abstract
Measurements of electron stimulated desorption (ESD) yields of O-, at incident electron energies below 20 eV, from 0.15 monolayers (ML) of O 2 physisorbed at 20 K on a variety of molecular solids have been perfo rmed. It is observed that for O2 condensed on 4 ML of H2O, the O- sign al from dissociative electron attachment (DEA) to O2 is entirely absen t. We attribute this to a complete quenching of the dissociative 2PI(u ), 2SIGMA(g)+, and 2SIGMA(u)+, resonances of O2- by the adjacent water molecules.