Role of the entrance channel in the production of complex fragments in fusion-fission and quasifission reactions in the framework of the dinuclear system model
Sh. A. KalandarovInstitute of Nuclear Physics, 702132 Tashkent, UzbekistanG. G. AdamianInstitute of Nuclear Physics, 702132 Tashkent, UzbekistanN. V. AntonenkoJoint Institute for Nuclear Research, 141980 Dubna, RussiaW. ScheidInstitut für Theoretische Physik der Justus–Liebig–Universität, D-35392 Giessen, GermanyJ. P. WieleczkoGrand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen, France
ABI
Abstract
The influence of entrance channel isospin, charge asymmetry, and bombarding energy on the competition between the complete fusion followed by the decay of compound nucleus and quasifission channels is treated within the dinuclear system model. The charge (mass) distributions of the products in the reactions ${}^{16,22}$O+${}^{27}$Al, ${}^{92,78}$Kr+${}^{40}$Ca, ${}^{86}$Kr${+}^{48}$Ca, ${}^{122}$Sn+${}^{12}$C, ${}^{32}$S+${}^{100}$Mo, ${}^{48}$Ca+${}^{144,154}$Sm, and ${}^{20,28}$Ne+${}^{181}$Ta are calculated at bombarding energies above the Coulomb barrier. The evolution of charge distribution of the complex fragments from the excited rotating nucleus ${}^{134}$Xe with increasing angular momentum and excitation energy is demonstrated.
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