TY  - JOUR
A1  - Soff, Gerhard
A1  - Reinhardt, Joachim
A1  - Müller, Berndt
A1  - Greiner, Walter
T1  - Shakeoff of the vacuum polarization in quasimolecular collisions of very heavy ions
T2  - Physical review letters
N2  - The theory of direct electron-positron pair production in the collision of heavy ions is formulated in the framework of the quasimolecular model. The pair production process acquires a collective nature for (Z1+Z2)α>1 and can be understood as the shakeoff of the strong vacuum polarization cloud formed in the quasimolecule. The total cross section is, e.g., 76 μb for Pb + Pb at Coulomb barrier energies.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2509
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-28964
UR  - http://link.aps.org/abstract/PRL/v38/p592
VL  - 38
IS  - 11
SP  - 592
EP  - 595
ER  -