Channeling effect in electronic spectra produced by grazing impact of fast protons on insulator surfaces

Electron emission due to grazing scattering of fast protons from LiF and KCl surfaces is studied under axial incidence conditions. The differential emission probability is calculated within a distorted-wave formalism, taking into account axial channeled trajectories. For different emission angles, e...

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Detalles Bibliográficos
Autores principales: Archubi, C.D., Gravielle, M.S., Tanis J.A., Orel A., Kamber E.Y., Nikolic D., Starace A.F., Berrah N., Gorczyca T.W.
Formato: CONF
Materias:
Chlorine compounds
Condensed matter physics
Electron emission
Channeling conditions
Channeling effect
Electronic spectrum
Emission probabilities
Grazing scattering
Impact velocities
Insulator surfaces
Proton incidence
Lithium compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17426588_v194_n13_p_Archubi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Electron emission due to grazing scattering of fast protons from LiF and KCl surfaces is studied under axial incidence conditions. The differential emission probability is calculated within a distorted-wave formalism, taking into account axial channeled trajectories. For different emission angles, electronic spectra for proton incidence along the two principal crystal axes ([100] and [110]) are compared with those co rresponding to an impact velocity in a random direction, finding effects associated with the channeling conditions. © 2009 IOP Publishing Ltd.

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