Ion Angular Distributions in Electron Stimulated Desorption: Oxygen and CO on W(111).
Abstract
The ion angular distributions resulting from electron stimulated desorption (ESD) of oxygen and carbon monoxide chemisorbed on a tungsten (111) crystal have been determined. The O(+) ions released during ESD of adsorbed oxygen exhibit three-fold symmetric angular distributions in orientational registry with the W(111) substrate. The CO(+) and O(+) ions released during ESD of a monolayer of CO are desorbed normal to the (111) surface. Models for both oxygen and CO adsorption are discussed. The data for CO are consistent with adsorption of CO in 'standing up' carbonyl structures in the virgin and alpha CO binding states. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1975
- Accession Number
- ADA020524
Entities
People
- Jerzy J. Czyzewski
- John Yates
- Theodore E. Madey
Organizations
- National Institute of Standards and Technology