Observation of Above-Threshold Dissociation of Na$_2^+$ in Intense Laser Fields
Abstract
We report the observation of above-threshold dissociation of a multielectron molecular system, Na. The process is due to continuum-continuum transitions in a field-dressed molecular continuum. Three well resolved fragmentation channels with different kinetic energy release patterns have been detected, of which, two are associated with ordinary photodissociation via light-induced potentials into Na(3s) + Na and Na(3p) + Na, and one with continuum-continuum transitions and above-threshold dissociation into Na(3p) + Na. We show that when we dress this molecule with a field whose intensity is ~3 x 10 W/cm, above-threshold dissociation prevails over other processes, such as field-ionization followed by Coulomb explosion.
Keywords
Cite
@article{arxiv.0806.2762,
title = {Observation of Above-Threshold Dissociation of Na$_2^+$ in Intense Laser Fields},
author = {Qun Zhang and John W. Hepburn and Moshe Shapiro},
journal= {arXiv preprint arXiv:0806.2762},
year = {2008}
}
Comments
15 pages, 3 figures, accepted to Phys. Rev. A (Rapid Communications)