The post-collisional interactions in ion-atom ionization collisions are studied around the electron capture to the continuum (ECC) process. For this purpose, a suitable double differential cross section is introduced, involving the longitudinal recoil-ion momentum and the projectile transverse momentum transfer. Using the fact that the ECC process is closely related to the threshold in the longitudinal momentum distribution, we study this distribution as a function of the projectile scattering angle. Using the CDW-EIS approximation we theoretically find a focusing (defocusing) effect as we get closer to the distribution threshold for proton (antiproton) impact on He atoms. © 2007 IOP Publishing Ltd.
Documento: | Artículo |
Título: | Projectile focusing near the recoil-ion threshold |
Autor: | Rodríguez, V.D.; Macri, P.A.; Barrachina, R.O. |
Filiación: | Departamento de Física, FCEyN, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Departamento de Física, Universidad Nacional de Mar del Plata, 7600 Mar del Plata, Argentina Centro Atómico Bariloche, Instituto Balseiro, 8400 S C de Bariloche, Rio Negro, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina |
Año: | 2007 |
Volumen: | 58 |
Número: | 1 |
Página de inicio: | 255 |
Página de fin: | 258 |
DOI: | http://dx.doi.org/10.1088/1742-6596/58/1/055 |
Título revista: | Journal of Physics: Conference Series |
Título revista abreviado: | J. Phys. Conf. Ser. |
ISSN: | 17426588 |
PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_17426588_v58_n1_p255_Rodriguez.pdf |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v58_n1_p255_Rodriguez |