TY  - JOUR
A1  - Müller, Udo
A1  - Reus, Theo de
A1  - Reinhardt, Joachim
A1  - Müller, Berndt
A1  - Greiner, Walter
T1  - Positron production in crossed beams of bare uranium nuclei
T2  - Physical review A
N2  - 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.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2419
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-29640
UR  - http://link.aps.org/abstract/PRA/v37/p1449
VL  - 37
IS  - 5
SP  - 1449
EP  - 1455
ER  -