https://doi.org/10.1140/epjd/e2008-00020-8
Multi electron capture processes in slow collisions between X7+ (X = N, O and Ne) ions with C60
1
Laboratory of Instrumentation Measure and Control, Physics Department Faculty of sciences, University Chouaïb Doukkali, BP 20, El Jadida, Morocco
2
Université Lyon 1, CNRS, LASIM UMR CNRS 5579, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
Corresponding author: a asalmoun250@hotmail.fr
Received:
15
January
2007
Revised:
25
April
2007
Published online:
20
February
2008
Electron capture processes in collision between slow X7+ (X = N, O and Ne) ions and C60 fullerene have been investigated using coincident measurements of the number n of ejected electrons, the mass and charge of the multicharged C60r+ recoil ions and their fragments Cmi+ and the final charge state of the outgoing projectiles X(q-s)+ (). The collision velocity is about 0.4 a.u. The partial cross-sections σrs , corresponding to r electrons transferred to the projectile with only s electrons stabilized, have been measured. Cross-sections for collisions “inside” and those “outside” the C60 cage have been separated by analyzing the kinetic energy of the outgoing projectile. The mean final charge state for frontal collisions has been measured to 3.1, 2.6 and 2.5 for N7+, O7+ and Ne7+ respectively. These results show the importance of the core effect on the stabilisation processes of captured electrons.
PACS: 34.70.+e – Charge transfer / 36.40.Qv – Stability and fragmentation of clusters / 36.40.Wa – Charged clusters
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008