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.
Documento: | Conferencia |
Título: | Channeling effect in electronic spectra produced by grazing impact of fast protons on insulator surfaces |
Autor: | Archubi, C.D.; Gravielle, M.S.; Tanis J.A.; Orel A.; Kamber E.Y.; Nikolic D.; Starace A.F.; Berrah N.; Gorczyca T.W. |
Filiación: | Instituto de Astronomía y Física Del Espacio, Casilla de Correo 67, Sucursal 28, Buenos Aires, 1428, Argentina Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina |
Palabras clave: | 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 |
Año: | 2009 |
Volumen: | 194 |
Número: | 13 |
DOI: | http://dx.doi.org/10.1088/1742-6596/194/13/132002 |
Título revista: | 26th International Conference on Photonic, Electronic and Atomic Collisions |
Título revista abreviado: | J. Phys. Conf. Ser. |
ISSN: | 17426588 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v194_n13_p_Archubi |