TY  - JOUR
A1  - Graf, Oliver
A1  - Reinhardt, Joachim
A1  - Müller, Berndt
A1  - Greiner, Walter
A1  - Soff, Gerhard
T1  - Angular correlations of coincident electron-positron pairs produced in heavy-ion collisions with nuclear time delay
T2  - Physical review letters
N2  - We calculate angular correlations between coincident electron-positron pairs emitted in heavy-ion collisions with nuclear time delay. Special attention is directed to a comparison of supercritical and subcritical systems, where angular correlations of pairs produced in collisions of bare U nuclei are found to alter their sign for nuclear delay times of the order of 2 × 10-21 s. This effect is shown to occur exclusively in supercritical systems, where spontaneous positron creation is active.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2415
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-29735
UR  - http://link.aps.org/abstract/PRL/v61/p2831
VL  - 61
IS  - 25
SP  - 2831
EP  - 2834
ER  -