Theory of Ion and Atom Scattering from Crystal Surfaces.
Abstract
A theoretical model for scattering of ions and neutrals in the hyperthermal energy range from perfect crystal surfaces was developed. Using an approximate model for ion recombination rate through Auger-neutralization, an ion beam is converted into a neutral beam with a distribution of velocities modified by the ion image attraction prior to its neutralization. A model was then constructed for the scattering of hyperthermal molecules from a surface of a perfect semi-infinite lattice composed of uncoupled harmonic oscillators. A pairwise gas-solid Morse potential was assumed. It was concluded that some overall features of ion recombination rates could be determined by comparing scattered flux distributions of a hyperthermal neutral beam and an identical ion beam. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 04, 1970
- Accession Number
- AD0714580
Entities
People
- Joseph Falcovitz
Organizations
- Massachusetts Institute of Technology