https://doi.org/10.1140/epja/i2015-15140-x
Regular Article - Experimental Physics
Nuclear molecule formation and time delay in collisions of nuclei with Z1 + Z2
110
1
GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291, Darmstadt, Germany
2
Justus-Liebig-Universität Gießen, II. Physikalisches Institut, 35392, Gießen, Germany
3
Manipal Centre for Natural Sciences, Manipal University, 576104, Kamataka, India
4
Institut für Kernphysik, Technische Universität Darmstadt, 64289, Darmstadt, Germany
5
Institut für Physik, Goethe-Universität Frankfurt, 60054, Frankfurt, Germany
6
Flerov Laboratory of Nuclear Reactions, JINR, Dubna, Moscow Region, Russia
7
Helmholtz Institut Mainz, 55099, Mainz, Germany
* e-mail: s.heinz@gsi.de
Received:
11
August
2015
Revised:
30
September
2015
Accepted:
19
October
2015
Published online:
3
November
2015
We investigated the formation of nuclear molecules and the occurrence of time delays in reactions of the superheavy systems 64Ni + 207Pb (
), 132Xe + 208Pb (
) and 238U + 238U (
. In deep inelastic binary reactions of Ni + Pb and Xe + Pb we observed clear signatures for the formation of long-living molecule-like nuclear systems which rotate by large angles of 180 degree. The evolution of the nuclear molecules was accompanied by large energy dissipation and a strong deformation of the nuclear system. The results from the giant system U + U revealed striking similarities to the ones from Ni + Pb and Xe + Pb , showing that significant time delays still occur in the heaviest accessible systems. The experiments were performed at the velocity filter SHIP at GSI and at the VAMOS spectrometer at GANIL.
© SIF, Springer-Verlag Berlin Heidelberg, 2015
