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Multi-ionization cross-sections of small ionic carbon clusters by particle impact as a tool to investigate their shapes

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.
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http://hal.in2p3.fr/in2p3-00008950
Contributor : Suzanne Robert <>
Submitted on : Wednesday, May 9, 2001 - 11:36:33 AM
Last modification on : Wednesday, September 16, 2020 - 4:01:09 PM

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  • HAL Id : in2p3-00008950, version 1

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M. Chabot, R. Fosse, K. Wohrer, D. Gardes, G. Maynard, et al.. Multi-ionization cross-sections of small ionic carbon clusters by particle impact as a tool to investigate their shapes. The European Physical Journal D : Atomic, molecular, optical and plasma physics, EDP Sciences, 2001, 14, pp.5-8. ⟨in2p3-00008950⟩

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