Scattering of hydrogen from surfaces. Progress report No. 1, November 1, 1976--November 1, 1977

Scattering of hydrogen ions and atoms from surfaces is the principal subject studied, with some limited supporting research on sputtering, surface chemical reactions, and on the scattering of non-hydrogenic particles. Previous studies of excited hydrogen backscattering from metals have been extended to cover an impact energy range from threshold (about 1 keV) to 200 keV and to include incident molecular ions. A complete model is described which includes Auger de-excitation processes and also an electron ion recombination mechanism to explain neutral atom formation. The model has been shown to explain changes to neutral atom formation when oxygen is adsorbed on metal surfaces and the model has also been tested with somewhat heavier projectiles