Bibcode
Zhang, H. Q.; Zhang, C. L.; Lin, C. J.; Nasirov, A. K.; Mandaglio, G.; Manganaro, M.; Giardina, G.
Referencia bibliográfica
Journal of Physics: Conference Series, Volume 282, Issue 1, article id. 012013, 13 pp. (2011).
Fecha de publicación:
2
2011
Número de citas
3
Número de citas referidas
2
Descripción
The angular distribution of fission fragments for the
32S+184W reaction at center-of-mass energies of
118.8, 123.1, 127.3, 131.5, 135.8, 141.1 and 144.4 MeV were measured.
The experimental fission excitation function is obtained. The fragment
angular anisotropy is found by extrapolating the fission angular
distributions. The measured fission cross sections are decomposed into
fusion-fission, quasifission and fast-fission contributions by the
dinuclear system model. The total evaporation residue and fusion-fission
excitation functions are calculated in the framework of the advanced
statistical model. The hindrance to complete fusion at small collision
energies increases due to the increase of quasifission events and it is
explained by the elongated shape of the dinuclear system which is formed
in collisions with small orientation angles to the beam direction. An
increase of the hindrance to complete fusion at large beam energies is
explained by the dependence of the quasifission and intrinsic fusion
barriers of dinuclear system on its angular momentum: at large angular
momentum the quasifission barrier decreases and the intrinsic fusion
barrier increases. In this reaction the contributions of fusion-fission
and quasifission fragments are comparable.