Stopping in ion-surface collisions at high energies
- Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires (Argentina)
Total energy loss by high-energy protons colliding with surfaces at grazing angles is investigated in terms of the collision parameters. A quantum formulation for binary collisions between the projectile and the free-electron gas is developed. Detailed results are obtained by using a first-order perturbation theory, and they are compared with two other stopping mechanisms, plasmon excitations and ionization of bound electrons. The range of importance of each mechanism is established in terms of the projectile velocity and its incidence angle. It is concluded that at high impact velocities the stopping due to binary collisions with the free-electron gas is dominant. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 544350
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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