Abstract
Slow collisions of electrons with Rydberg sodium atoms have been quantum mechanically investigated by using the time-dependent close-coupling (TDCC) method. To make such large-scale calculations possible, it is essential to implement the TDCC method with the powerful finite-element discrete variable representation (FEDVR). Besides visualizing the slow collision dynamics, our quantum calculations show interesting features in the slow electron impact ionization of Rydberg atoms. The energy sharing between two continuum electrons changes dramatically as the incoming electron energy decreases. Predominant equal-energy sharing is observed in such a cold (e,2e) process, even though the impact electron energy is still twice the binding energy of the Rydberg electron.
Published Version
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