Evidence of Collisional Coherences in the Transport of Hydrogenic Krypton through Amorphous Carbon Foils

We study theoretically and experimentally the population dynamics of the internal state of 60MeV/u Kr35+ ions traversing amorphous carbon foils. A quantum transport theory is developed that incorporates the state mixing induced by the wake field of the ion as well as all the coherences generated by the collisional and radiative redistribution of states. We show that the internal state of the ion is sensitive to collisional coherences and the wake field. The results of the full simulations are found to be in good agreement with experimental data