Collision spectroscopy ofAr8++H2at low velocities(v<1a.u.)

Abstract

Single and double electron transfer have been studied for the collision system ${\mathrm{Ar}}^{8+}{+\mathrm{H}}_{2}$ at low velocities $(v<1\mathrm{a}.\mathrm{u}.).$ X-ray ultraviolet and Auger spectroscopies complemented by translational energy gain and time-of-flight spectroscopies reveal details on the transfer mechanisms: in contrast to the other two-electron target system (He target), a channel is opened where electron capture takes place with further dissociation of ${\mathrm{H}}_{2}^{+}.$ We consider the target fragment dynamics and discuss possible molecule dissociation mechanisms.