/ Theory-Nucl arXiv:0906.0880


Competition between fusion-fission and quasifission processes in S-32 + W-184 reaction


Zhang, H.Q. (Beijing, Inst. Atomic Energy) ; Zhang, C.L. (Beijing, Inst. Atomic Energy) ; Lin, C.J. (Beijing, Inst. Atomic Energy) ; Liu, Z.H. (Beijing, Inst. Atomic Energy) ; Yang, F. (Beijing, Inst. Atomic Energy) ; Nasirov, A.K. (Dubna, JINR) ; Mandaglio, G. (INFN, Catania) ; Manganaro, M. (INFN, Catania) ; Giardina, G. (INFN, Catania)

Published in: Phys.Rev.
Year: 2010
Vol.: C81
Page No: 034611
Pages: 24

Abstract: The angular distributions of fission fragments for the $^{32}$S+$^{184}$W 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 ($\mathcal{A}_{\rm exp}$) is found by extrapolating the each fission angular distributions. The measured fission cross sections of the $^{32}$S+$^{182,184}$W reaction are decomposed into fusion-fission, quasifission and fast fission contributions by the dinuclear system model. The total evaporation residue excitation function for the $^{32}$S+$^{184}$W reaction calculated in the framework of the advanced statistical model is in good agreement with the available experimental data up to about $E_{\rm c.m.}\approx 160$ MeV. The theoretical descriptions of the experimental capture excitation functions for both reactions and quantities $K_0^2$, $<\ell^2>$ and $\mathcal{A}_{\rm exp}$ which characterize angular distributions of the fission products were performed by the same partial capture cross sections at the considered range of beam energy.

Web-Page: http://inspirebeta.net/record/822249/files/Fig1.png; http://inspirebeta.net/record/822249/files/Fig10.png; http://inspirebeta.net/record/822249/files/Fig11.png; http://inspirebeta.net/record/822249/files/Fig12.png; http://inspirebeta.net/record/822249/files/Fig13.png; http://inspirebeta.net/record/822249/files/Fig2.png; http://inspirebeta.net/record/822249/files/Fig3.png; http://inspirebeta.net/record/822249/files/Fig4.png; http://inspirebeta.net/record/822249/files/Fig5.png; http://inspirebeta.net/record/822249/files/Fig6.png; http://inspirebeta.net/record/822249/files/Fig7.png; http://inspirebeta.net/record/822249/files/Fig8.png; http://inspirebeta.net/record/822249/files/Fig9.png

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