Semiclassical formalism in ion-surface capture at high energies
The electron-capture process from the free-electron gas of a solid by heavy ions at grazing collisions is studied using the first Born approximation. A proper semiclassical expression is derived from the formal quantum treatment by introducing a classical trajectory to describe the movement of the p...
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1994
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v50_n4_p3202_Gravielle http://hdl.handle.net/20.500.12110/paper_10502947_v50_n4_p3202_Gravielle |
| Aporte de: |
| Sumario: | The electron-capture process from the free-electron gas of a solid by heavy ions at grazing collisions is studied using the first Born approximation. A proper semiclassical expression is derived from the formal quantum treatment by introducing a classical trajectory to describe the movement of the projectile. When our finding is compared with the scattering amplitude obtained with the usual semiclassical formalism, three important differences are found: first, the generally used specular reflection of the projectile does not hold; second, a new term associated with a sort of projectile translation factor comes out; and third, a multiplicative coefficient ranging between 1/2 and 1 arises from the formalism depending on the trajectory. © 1994 The American Physical Society. |
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