Environment assisted electron capture

Details Environment assisted electron capture Environment assisted electron capture

2009-11-09

arxiv.org/abs/0911.1746v1

J. Phys. B: At. Mol. Opt. Phys. 42, 231001(2009)

Physics

Quantum Physics

Scientific paper

10.1088/0953-4075/42/23/231001

Electron capture by {\it isolated} atoms and ions proceeds by photorecombination. In this process a species captures a free electron by emitting a photon which carries away the excess energy. It is shown here that in the presence of an {\it environment} a competing non-radiative electron capture process can take place due to long range electron correlation. In this interatomic (intermolecular) process the excess energy is transferred to neighboring species. The asymptotic expression for the cross section of this process is derived. We demonstrate by explicit examples that under realizable conditions the cross section of this interatomic process can clearly dominate that of photorecombination.

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