ISSN:
1434-6079
Keywords:
PACS. 34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization) – 34.50.Gb Electronic excitation and ionization of molecules; intermediate molecular states (including lifetimes, state mixing, etc.) – 34.10.+x General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) – 36.40.Mr Spectroscopy and geometrical structure of custers
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: Single, double and triple ionization cross-sections of C n + clusters in collisions with helium atoms at intermediate velocity (2.6 a.u.) have been measured ( n = 1 → 5). The relative multi-ionization cross-sections (double over single and triple over single) are first increasing with n, then decreasing when going from n = 4 to n = 5. We show, on the basis of an independent atom and electron collisional treatment, that this effect is attributable to a change in the cluster shape. The role of the cluster compactness on relative multi-ionization cross-sections is pointed out here for the first time.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100530170226
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