Accession Number : AD0714580

Title :   Theory of Ion and Atom Scattering from Crystal Surfaces.

Descriptive Note : Doctoral thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF AERONAUTICS AND ASTRONAUTICS

Personal Author(s) : Falcovitz,Joseph

Report Date : 04 MAY 1970

Pagination or Media Count : 139

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)

Descriptors :   (*CRYSTAL LATTICES, SCATTERING), (*SURFACES, *ION BOMBARDMENT), IONS, ATOMS, MOLECULAR ORBITALS, ELECTRONS, REACTION KINETICS, MATHEMATICAL ANALYSIS, THESES

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE