ON SELF-LIMITATION OF UV PHOTOLYSIS IN RARE-GAS SOLIDS AND SOME OF ITS CONSEQUENCES FOR MATRIX STUDIES

Citation
L. Khriachtchev et al., ON SELF-LIMITATION OF UV PHOTOLYSIS IN RARE-GAS SOLIDS AND SOME OF ITS CONSEQUENCES FOR MATRIX STUDIES, Chemical physics letters, 288(5-6), 1998, pp. 727-733
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
0009-2614
Volume
288
Issue
5-6
Year of publication
1998
Pages
727 - 733
Database
ISI
SICI code
0009-2614(1998)288:5-6<727:OSOUPI>2.0.ZU;2-M
Abstract
UV photolysis of small molecules embedded in rare-gas matrices is exam ined. We demonstrate that photolysis can be self-limited when products absorb the photolysing radiation. As a result of the rising absorptio n, in-situ detected luminescence of the photolysis product saturates f aster than its concentration. In particular, the present study support s the conclusion that 193 nm photolysis of hydrogen-containing species in Xe matrices produces hydrogen atoms in amounts comparable with the other dissociating part of the precursor. Also, we show that 193 nm r adiation activates mobility of hydrogen atoms in annealing, accelerati ng photochemical processes related to hydrogen mobility. (C) 1998 Else vier Science B.V. All rights reserved.