https://doi.org/10.1140/epjd/e20020090
Merged beam study of the associative ionisation (C+, N+ and O+) + O-
1
Unité FYAM, Département de Physique, Université Catholique de Louvain, chemin du cyclotron 2, 1348 Louvain-La-Neuve, Belgium
2
LCAR (UMR 5589) , Université Paul Sabatier-Toulouse III, 118 route de Narbonne, bâtiment IIIR1b4, 31062 Toulouse Cedex 4, France
Corresponding author: a arnaud.lepadellec@irsamc.ups-tlse.fr
Received:
10
December
2001
Revised:
12
March
2002
Published online: 15 June 2002
Total cross-sections have been measured for the associative ionisation of 
, 
and 
by means of a merged-beam set-up operating with keV beams. These original measurements might be
relevant to the understanding of some astrophysical objects or laboratory-made plasmas (flames and etching plasmas). The magnitude of these cross-sections is particularly large whatever the associating system, as these
are in the range of 
cm2 at thermal energies. Their behaviour as a function of energy significantly differs
from one system to another, and is characterised by the Wigner law at low energy, and a rapid fall-off at higher
energy due to competition with non-associative ionisation processes.
PACS: 82.30.Nr – Association, addition, insertion, cluster formation / 31.10.+z – Theory of electronic structure, electronic transitions, and chemical binding / 95.30.Ft – Molecular and chemical processes and interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
