Absolute Charge Transfer and Fragmentation Cross Sections in He2+C60 Collisions

A. Rentenier, L. F. Ruiz, S. Díaz-Tendero, B. Zarour, P. Moretto-Capelle, D. Bordenave-Montesquieu, A. Bordenave-Montesquieu, P. -A. Hervieux, M. Alcamí, M. F. Politis, J. Hanssen, and F. Martín
Phys. Rev. Lett. 100, 183401 – Published 5 May 2008

Abstract

We have determined absolute charge transfer and fragmentation cross sections in He2++C60 collisions in the impact-energy range 0.1–250 keV by using a combined experimental and theoretical approach. We have found that the cross sections for the formation of He+ and He0 are comparable in magnitude, which cannot be explained by the sole contribution of pure single and double electron capture but also by contribution of transfer-ionization processes that are important even at low impact energies. The results show that multifragmentation is important only at impact energies larger than 40 keV; at lower energies, sequential C2 evaporation is the dominant process.

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  • Received 16 October 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.183401

©2008 American Physical Society

Authors & Affiliations

A. Rentenier1, L. F. Ruiz2, S. Díaz-Tendero2, B. Zarour3, P. Moretto-Capelle1, D. Bordenave-Montesquieu1, A. Bordenave-Montesquieu1, P. -A. Hervieux4, M. Alcamí2, M. F. Politis5, J. Hanssen3, and F. Martín2

  • 1Laboratoire de Collisions, Agrégats et Reactivité, UMR 5589 CNRS, Université Paul Sabatier 3, 31062 Toulouse, France
  • 2Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain
  • 3L.P.M.C., Université de Metz, Technopôle 2000, 1 Boulevard Arago, 57078 Metz Cedex 03, France
  • 4Institut de Physique et Chimie des Matériaux de Strasbourg, 23 rue Loess, 67034 Strasbourg, France
  • 5I.M.P.M.C., Université Pierre et Marie Curie, 140 rue de Lourmel, 75015 Paris, France

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Issue

Vol. 100, Iss. 18 — 9 May 2008

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