Electronic many-body effects alone can be the driving force for an
ultrafast migration of a positive charge created upon ionization of
molecular systems. Here we show that this purely electronic phenomenon
generates a characteristic IR radiation. The situation when the initial
ionic wave packet is produced by a sudden removal of an electron is also
studied. It is shown that in this case a much stronger UV emission is
generated. This emission appears as an ultrafast response of the
remaining electrons to the perturbation caused by the sudden ionization
and as such is a universal phenomenon to be expected in every
multielectron system.
http://prl.aps.org/abstract/PRL/v106/i5/e053001
What I want everyone to think about is:
- What is the role of the detached electron that they have completely neglected?
- Can this radiation be observed, and if yes, will it be coherent?
PPT slides to follow...#
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