Abstract
Two strong-coupling effects are described in collisions of singly charged ions with laser-excited Na Rydberg atoms. For projectile velocities comparable with orbital velocities in the target a multitude of nearly degenerate Rydberg states become coupled during the encounter. Evidence is given for a breakdown of the classical n 4 scaling rule in charge transfer, based on a factor-of-four difference between H(1s) and scaled Rydberg data for slow collisions. Dipole-forbidden l change in Na(28d) + Na + collisions occurs below the matching velocity despite impact parameters large enough that the dipole approximation for the perturbing potential remains valid.
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Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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