New atomic mechanism for positron production in heavy-ion collisions
Abstract
This letter gives a newly considered mechanism for positron production which consists of filling of long-lived, supercritical, multiple-vacancy states via higher-order perturbations, with interference terms of the same order of magnitude as in the case of the previously considered single vacancies. This mechanism could be relevant to the structure in positron energy spectra observed at Gesell- schaft für Schwerionenforschung in heavy-ion collisions. A possible directional anisotropy of positron emission is discussed.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 1985
- DOI:
- 10.1103/PhysRevLett.54.781
- Bibcode:
- 1985PhRvL..54..781L
- Keywords:
-
- Heavy Ions;
- Ionic Collisions;
- Nuclear Models;
- Particle Production;
- Positrons;
- Anisotropy;
- Energy Spectra;
- Transition Probabilities;
- Nuclear and High-Energy Physics;
- 34.50.-s;
- 14.60.Cd;
- 34.90.+q;
- Scattering of atoms and molecules;
- Electrons;
- Other topics in atomic and molecular collision processes and interactions