Bibcode
Nasirov, A. K.; Muminov, A. I.; Utamuratov, R. K.; Fazio, G.; Giardina, G.; Hanappe, F.; Mandaglio, G.; Manganaro, M.; Scheid, W.
Bibliographical reference
The European Physical Journal A, Volume 34, Issue 3, pp.325-339
Advertised on:
12
2007
Citations
44
Refereed citations
32
Description
The anisotropy in the angular distribution of the fusion-fission and
quasifission fragments for the 16O + 238U ,
19F + 208Pb and 32S + 208Pb
reactions is studied by analyzing the angular-momentum distributions of
the dinuclear system and compound nucleus which are formed after capture
and complete fusion, respectively. The orientation angles of the axial
symmetry axes of the colliding nuclei relative to the beam direction are
taken into account for the calculation of the variance of the projection
of the total spin onto the fission axis. It is shown that there is a
large contribution of the quasifission fragments in the 32S +
208Pb reaction to the deviation of the experimental angular
anisotropy from the statistical model results. Enhancement of anisotropy
at low energies in the 16O + 238U reaction is
connected with the quasifission of the dinuclear system having low
temperature and relatively small effective moment of inertia.