https://doi.org/10.1140/epjd/e2003-00102-1
Fragmentation of neutral Cn clusters (n≤9): experimental and theoretical investigations
1
Institut de Physique Nucléaire,
Université Paris-Sud, 91406 Orsay Cedex, France
2
GPS, Université Paris 6 (CNRS UMR 75088) , 2 place
Jussieu, 75251 Paris Cedex 05, France
3
Departamento de Química C-IX, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
4
LPMC, Institut de Physique, Technopôle 2000, 57078 Metz,
France
Corresponding authors: a wohrer@gps.jussieu.fr - b fernando.martin@uam.es
Received:
10
September
2002
Published online:
3
July
2003
We report on experimental and theoretical efforts
designed to understand the fragmentation of small carbon clusters.
Experimentally, a new detection system for high velocity fragments
has been recently developed allowing the fragmentation of high
velocity clusters to be totally recorded [1]. Results for
the branching ratios of deexcitation of C5 and C9 formed
by electron capture in high velocity C
, C
+ He
collisions are presented. Theoretically, the dissociation dynamics
of C5 has been investigated using a kinematical model based
on the statistical theory of Weisskopf. In this model various
structural quantities (geometries, dissociation energies, harmonic
frequencies), are required for both the parent cluster and the
fragments. They have been calculated within DFT and
coupled-cluster formalisms for Cn up to n=9. In all cases, a
strong correlation between measured branching ratios and
calculated dissociation energies is observed.
PACS: 36.40.Qv – Stability and fragmentation of clusters
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
