Fragmentation of hydrocarbons by collision. AGAT@ANDROMEDE.

We are studying small hydrocarbons produced in high velocity (3.4 a.u.) collision between cations and He atoms. During the collision those hydrocarbons gain some energy and release this energy doing fragmentation. Thanks to the detector AGAT we have been able to measure fragmentation branching ratios for (y=2-4, q=0-3). We also constructed semi-empirical breakdown curves for using these experimental branching ratios.