Absolute charge transfer and fragmentation cross sections in He2+-C60 collisions.
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.
Laboratoire de Collisions, Agrégats et Reactivité, UMR 5589 CNRS, Université Paul Sabatier 3, 31062 Toulouse, France.
A
A
Rentenier
L F
LF
Ruiz
S
S
Díaz-Tendero
B
B
Zarour
P
P
Moretto-Capelle
D
D
Bordenave-Montesquieu
A
A
Bordenave-Montesquieu
P-A
PA
Hervieux
M
M
Alcamí
M F
MF
Politis
J
J
Hanssen
F
F
Martín