Abstract
By analyzing spectra of emitted photons, we have studied state-selective electron capture in collisions of He2+ on aligned Na*(3p) atoms that span the ''velocity-matching'' energy between projectile and target electron. We find a strong dependence of the capture cross sections on the Na*(3p) orbital alignment, i.e., aligned perpendicular or parallel to the ion beam direction. The preference changes from perpendicular to parallel at a velocity close to the classical orbital velocity of the 3p electron. Classical-trajectory Monte Carlo calculations reproduce this striking energy dependence.
Original language | English |
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Pages (from-to) | 513-516 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 71 |
Issue number | 4 |
DOIs | |
Publication status | Published - 26-Jul-1993 |
Keywords
- ALIGNMENT
- ATOMS