1988/03/01 by U. Müller, T. de Reus, J. Reinhardt +3 · 3 citations
Physics and Astronomy · #Atomic and Molecular Physics #Nuclear physics research studies #High-Energy Particle Collisions Research
paper · doi:10.1103/physreva.37.1449
openalex publication_date 1988/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Positron creation in crossed-beam collisions of high-energy, fully stripped heavy ions is investigated within the coupled-channel formalism. In comparison with fixed-target collisions of highly stripped heavy-ion projectiles positron production probabilities are enhanced by more than one order of magnitude. The increase results from the possibility to excite electrons from the negative energy continuum into all bound states. The positron spectrum is shifted towards higher energies because of the absence of electron screening. Rutherford scattering as well as nuclear collisions with time delay are investigated. We also discuss the filling of empty bound states by electrons from pair-production processes.