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Abstract:

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.

Registro:

Documento: Artículo
Título:Semiclassical formalism in ion-surface capture at high energies
Autor:Gravielle, M.S.; Miraglia, J.E.
Filiación:Instituto de Astronomía y Física del Espacio, Consejo Nacional de Investigaciones Científicas y Técnicas, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires, Argentina
Año:1994
Volumen:50
Número:4
Página de inicio:3202
Página de fin:3207
DOI: http://dx.doi.org/10.1103/PhysRevA.50.3202
Título revista:Physical Review A
ISSN:10502947
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v50_n4_p3202_Gravielle

Referencias:

  • Burgdörfer, J., (1993) Progress in Atomic and Molecular Physics, , edited by, C.D. Lin, World Scientific, Singapore
  • Burgdörfer, J., Kupfer, E., Gabriel, H., (1987) Phys. Rev. A, 35, p. 4963
  • Winter, H., Kirsch, R., Poizat, J.C., Remillieux, J., (1991) Phys. Rev. A, 43, p. 1660
  • Thumm, U., Briggs, J.S., (1989) Nucl. Instrum. Methods Phys. Res. B, 43, p. 471
  • Miraglia, J.E., (1993) Abstracts of Contributed Papers of the XVIII International Conference on the Physics of Electronic and Atomic Collisions, p. 776. , edited by, T. Andersen, B. Fastrup, F. Folkmann, H. Knudsen, IFA Print, Aarhus Universitet, Aarhus, Denmark
  • Miraglia, J.E., (1994) Phys. Rev. A, 50, p. 2410
  • M.S. Gravielle and J.E. Miraglia, in Abstracts of Contributed Papers of the XVIII International Conference on the Physics of Electronic and Atomic Collisions [5], p. 775; Gravielle, M.S., Miraglia, J.E., (1994) Phys. Rev. A, 50, p. 2425
  • McDowell, M.R.C., Coleman, J.P., (1970) Introduction to the theory of Ion Atom Collisions, p. 273. , North Holland, Amsterdam,206
  • The T matrix elements obtained by using the first perturbative order in VPe and the S e potential should be equal. However, the use of an impenetrable wall (infinite barrier) may introduce some discrepancies; We use Z0=-(1/0.912) ln({1836 over2} viz2/1.66) (in a.u.); Bates, D.R., McCarrol, R., (1958) Proc. R. Soc. London, Ser. A, 345, p. 175

Citas:

---------- APA ----------
Gravielle, M.S. & Miraglia, J.E. (1994) . Semiclassical formalism in ion-surface capture at high energies. Physical Review A, 50(4), 3202-3207.
http://dx.doi.org/10.1103/PhysRevA.50.3202
---------- CHICAGO ----------
Gravielle, M.S., Miraglia, J.E. "Semiclassical formalism in ion-surface capture at high energies" . Physical Review A 50, no. 4 (1994) : 3202-3207.
http://dx.doi.org/10.1103/PhysRevA.50.3202
---------- MLA ----------
Gravielle, M.S., Miraglia, J.E. "Semiclassical formalism in ion-surface capture at high energies" . Physical Review A, vol. 50, no. 4, 1994, pp. 3202-3207.
http://dx.doi.org/10.1103/PhysRevA.50.3202
---------- VANCOUVER ----------
Gravielle, M.S., Miraglia, J.E. Semiclassical formalism in ion-surface capture at high energies. 1994;50(4):3202-3207.
http://dx.doi.org/10.1103/PhysRevA.50.3202