Absolute charge transfer and fragmentation cross sections in He2+-C60 collisions |
| |
Authors: | Rentenier A Ruiz L F Díaz-Tendero S Zarour B Moretto-Capelle P Bordenave-Montesquieu D Bordenave-Montesquieu A Hervieux P-A Alcamí M Politis M F Hanssen J Martín F |
| |
Institution: | Laboratoire de Collisions, Agrégats et Reactivité, UMR 5589 CNRS, Université Paul Sabatier 3, 31062 Toulouse, France. |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|