Abstract
The -shell photoelectric effect for a hydrogenlike ion is studied by its time-reversed process occurring in relativistic collisions between bare uranium ions and low- target atoms. In the time-reversed situation, an electron is captured into the ground state with the simultaneous emission of a photon. We present an angular differential study of these transitions for laboratory observation angles between nearly 0° and 150°. Our observation of photon emission close to 0° allowed us to identify spin-flip contributions to the photoionization process and to determine their relative strength.
- Received 28 October 1998
DOI:https://doi.org/10.1103/PhysRevLett.82.3232
©1999 American Physical Society