INVESTIGADORES
GASANEO Gustavo
congresos y reuniones científicas
Título:
Time--dependent method with Sturmian basis functions
Autor/es:
J. M. RANDAZZO, A. L. FRAPICCINI, F. D. COLAVECCHIA, G. GASANEO AND D. M. MITNIK
Lugar:
Auburn University, Auburn Alabama, USA
Reunión:
Workshop; Workshop on Atomic Ion Stage Abundances in Astrophysical Plasmas; 2008
Institución organizadora:
Auburn University
Resumen:
We use the Sturmian function basis methodology [1, 2] to solve di erent scattering problems. First we review the one?electron Sturmian eigenvalue problem, in which outgoing (bounded) wave boundary conditions are imposed at positive (negative) energies. A complete set of functions is obtained, each of them having the same asymptotic behavior, corresponding to an electron moving around the nucleus (or going away from it) with a externally fixed energy. Expanding an initial wavefunctions in terms of this basis, a time?dependent propagation can be implemented. This approach is very ecient and greatly simplify the computational eff orts. The Sturmian basis methodology was also applied to obtain three?body scattering wave functions for the problem of electron impact excitation and ionization, in the time?independent framework.
