Resonant Coherent Excitation of Fast Heavy Ions in Crystals

摘要

Hydrogen-like ions of B, C, N, O and F and helium-like ions of N, O and F have been shown to exhibit resonant coherent excitation from their n = 1 to their n = 2 states, caused by periodic electric potential oscillations which occur as the ion moves through axial or planar chanels of a thin crystal of Au. The resonance velocities of the ions exhibit shifts and splittings which are the result of the crystal fields acting upon the one-, or two-electron ions. Comparisons with theory show fairly good agreement except for certain weak resonance components which do not appear or appear at unexpected values of the resonance velocity. (ERA citation 06:029410)