New Mechanism for the Desorption of Excited Atoms by Photon Bombardment of Alkali Halide Crystals.
Abstract
We report measurements of photon-stimulated desorption of excited atoms from LiF and NaCl crystal surfaces. Based on these measurements, we propose a new model of photon-initiated, defect-mediated desorption involving exoergic surface reactions between alkali dimers and halogens. This model consists of two steps: (a) reactants are formed at the surface, directly or by the migration to the surface of holes and defects created in the near surface bulk, due to uv photon bombardment, and (b) excited alkali atoms are emitted following a reaction between the alkali and halogen surface species. jg p2
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 04, 1991
- Accession Number
- ADA302907
Entities
People
- A. V. Barnes
- C. S. Ewig
- Dong Liu
- P. H. Bunton
- R. G. Albridge
Organizations
- Vanderbilt University