Low field laser ionization of argon clusters: the remarkable fragmentation dynamics of doubly ionized clusters.
We have investigated the fission following a Coulomb explosion in argon clusters (up to Ar800) irradiated by a femtosecond infrared laser with moderate intensity IL approximately 10(13) W cm(-2). We report the a priori surprising observation of well-defined velocity distributions of the ionized fragments Ar+n<50. This is interpreted by the formation of a valence shell excited charged ion, followed by relaxation, charge transfer by autoionizing collision at very short distance, and asymmetric fission.
Poisson
Lionel
L
Laboratoire Francis Perrin, CEA/DSM/DRECAM/SPAM-CNRS URA 2453, C.E.A. Saclay, F-91191 Gif-sur-Yvette cedex, France. lionel.poisson@cea.fr
Raffael
Kevin D
KD
Gaveau
Marc-André
MA
Soep
Benoît
B
Mestdagh
Jean-Michel
JM
Caillat
Jérémie
J
Taïeb
Richard
R
Maquet
Alfred
A