Molecular-orbital X-rays and their anisotropies in heavy-ion collisions in solids and gases

Abstract

Molecular-orbital spectra and anisotropies were measured in CI+NaC1, CI+KC1, C1 +Ti, and CI+Ar collisions at bombarding energies between 0.5 and 2.6MeV/a.m.u. The results suggest that at low bombarding energies MO x-rays in the KC1 and NaCI targets are partly produced by a two-collision process. Qualitative differences between the anisotropies of gas-and solid-target induced MO x-ray spectra underline this result. Also, new information on the bombarding-energy dependency of anisotropies at higher projectile velocities has been obtained, confirming previous observations in low-Z systems.