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Fragmentation of multiply-charged small hydrocarbon molecules in CnHq+ (n = 1-3, q = 2-6) produced in high velocity collisions: Branching Ratios and associated Kinetic Energy Releases of the H+ fragment

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, , Citation K Béroff et al 2012 J. Phys.: Conf. Ser. 388 102062 DOI 10.1088/1742-6596/388/10/102062

1742-6596/388/10/102062

Abstract

Dissociation Branching Ratios of CnHq+ molecules formed by multi-ionization of incident CnH+ projectiles colliding in high velocity collisions with a Helium atom have been measured. In addition, the KER of the H+ fragment for each channel was extracted. A striking feature that we obtained is the fact that the KER (Kinetic Energy Release) is always far below predictions of the point charge coulomb model (PCCM) even at large q values. For CHq+, we could explain this result on the basis of electronic state calculations and taking into account the fact that 1s ionization of the carbon atom occurs and has its own dynamics.

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10.1088/1742-6596/388/10/102062