|Título||Observation of collective inner-shell effects for protons backscattered from the Al(110) surface
Grande, Pedro Luis
Silva Junior, Agenor Hentz da
|Abstract||The surface peak of 98-keV protons backscattered from a clean Al (110) surface has been studied in detail for three different scattering geometries. The corresponding energy-loss distributions are asymmetric due to the single and double ionization of the Al inner-shell electrons (L shell). Effects beyond the independent-electron model (inner-shell collective effects) have been observed by using Monte Carlo simulations for the ion ballistic and coupled-channel calculations for the inelastic energy loss. These effects decrease the width by up to 10% for the full width at half maximum. Correspondingly, the low-energy tail of the surface peak is reduced in intensity by more than 30% in the case of a large number of near central collisions as in shadowing and blocking geometries.
|Contido em||Physical review. A, Atomic, molecular, and optical physics. New York. Vol. 72, no. 1 (July 2005), 012902 4p.
Métodos de Monte Carlo
Perda de energia de particulas
|Tipo||Artigo de periódico
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