Three-body effects in the fragmentation of ${\mathrm{D}}_2$ by slow, highly-charged xenon

Kinematically complete data and five-body classical trajectory Monte Carlo calculations are presented for fragmentation of ${\mathrm{D}}_2$ by slow ${\mathrm{Xe}}^{26+}$ ions. For strongly perturbing collisions, two types of three-body effects are identified. The largest, due to interactions between the undissociated molecule and the dipole field of the projectile, is compatible with a two-step fragmentation picture. A smaller effect, due to quadrupolelike and higher multipole interactions between the dissociating fragments and the projectile field, extracts internal energy from the exploding molecule and is incompatible with a two-step picture.