Broadening of projectile x-ray lines in solid targets

Abstract
In this paper high-resolution K x-ray spectra for boron (1 MeV) and neon (90 keV) projectiles moving in solid targets are reported. The x-ray transitions from the moving ions are found to be substantially broadened, compared to gas-target spectral lines. Estimates of the extent of broadening are presented, and physical mechanisms responsible for it are discussed.