Abstract
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.
Original language | English |
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Pages (from-to) | 207-208 |
Number of pages | 2 |
Journal | Physica Scripta |
Volume | T80B |
Publication status | Published - 1999 |
Event | IX International Conference on Physics of Highly Charged Ions - , Germany Duration: 9-Sep-1998 → 14-Sep-1998 |
Keywords
- HIGHLY-CHARGED IONS
- FRAGMENTATION
- ATOMS
- C-60
- IMPACT