Experimental study of the excitation mechanisms in Heq+-fullerene collisions

O Hadjar*, T Schlatholter, R Hoekstra, R Morgenstern

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

3 Citaten (Scopus)

Samenvatting

In a recent study on Oq+ (1 less than or equal to q less than or equal to 7) collisions with C-60, We presented fragmentation patterns dominated by electron capture processes. We now investigate the remaining important interaction mechanisms: electronic excitation due to ion-electron interactions and vibrational excitation due to ion-nucleus interactions as well as the possible electronic-vibrational coupling. Using Heq+ (q = 1, 2) projectiles we observed a decrease of evaporation peaks (ascribed to vibrational excitation) with increasing collision energy (2 keV * q less than or equal to E-kin less than or equal to 100 keV * q) and an increase of small fragments C-n(+) as well as parent ions C-60(q+) (attributed to electronic excitation). The additional potential energy carried by He2+ (with respect to He+) was found to cause an extra fragmentation and ionization respectively in the low and high projectile energy regimes.

Originele taal-2English
Pagina's (van-tot)207-208
Aantal pagina's2
TijdschriftPhysica Scripta
VolumeT80B
StatusPublished - 1999
EvenementIX International Conference on Physics of Highly Charged Ions - , Germany
Duur: 9-sep-199814-sep-1998

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