HYDROGEN EXPOSURE-ENHANCED CN-ASTERISK EMISSION FROM ALKALI-HALIDE SURFACES

Authors
XU J HUDSON L ALBRIDGE R BARNES A TOLK N
Citation
J. Xu et al., HYDROGEN EXPOSURE-ENHANCED CN-ASTERISK EMISSION FROM ALKALI-HALIDE SURFACES, Surface science, 289(1-2), 1993, pp. 120000622-120000624
Citations number
18
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
289
Issue
1-2
Year of publication
1993
Pages
120000622 - 120000624
Database
ISI
SICI code
0039-6028(1993)289:1-2<120000622:HECEFA>2.0.ZU;2-K
Abstract
We report recent measurements of the enhancement of electron-stimulate d desorption (ESD) of excited CN from KCl, NaCl, NaF, and LiF surfaces due to the exposure of the surfaces to gaseous H-2. The CN desorptio n yield varies linearly with the ESD yield of atomic hydrogen. The mea sured rotational distribution of CN desorbed from a H-2-dosed LiF sur face is different from that for an un-dosed LiF surface. We propose an HCN-mediated process to explain the hydrogen-enhanced CN desorption.