The noncharacteristic radiation observed in heavy-ion bombardment of Si was investigated with 200-keV S32, Cl35,37, Ar40, K39,41, Ca40, and Ti48 projectiles (16<~Z<~22) on Si. The high-energy tail of the noncharacteristic radiation is observed to shift to higher energies as projectile Z is increased. The observed end-point energy shifts are in agreement with the interpretation that the radiation arises from the radiative decay of a projectile 2p vacancy in the quasimolecule formed by the projectile and the target atom during the collision.
ASJC Scopus subject areas
- Physics and Astronomy(all)