Time-dependent close-coupling calculations of dielectronic capture in He.
We report on the first time-dependent close-coupling calculation of dielectronic capture into a doubly excited state of a two-electron atom. An incoming electron is represented by a Gaussian wave packet which collides with singly ionized helium in its ground state. The close-coupling equations describe the propagation of the total compound wave function on a two-dimensional radial lattice. By projecting this wave function onto a doubly excited state of neutral helium, we can determine the probability amplitude for dielectronic capture into one of these states and the subsequent autoionization from it.
Mitnik
D M
DM
Department of Physics, Rollins College, Winter Park, Florida 32789, USA.
Griffin
D C
DC
Pindzola
M S
MS