Abstract
The angular distribution 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 is found by extrapolating the fission angular distributions. The measuredfission cross sections aredecomposed into fusion-fission, quasifission and fast-fission contributions by the dinuclear system model. Thetotal evaporation residue and fusion-fission excitation functions are calculated in the framework of the advanced statistical model.
Highlights
Studies of fusion-fission reactions between heavy ion projectile and heavy target nuclei have demonstrated to be very useful in developing an understanding of the nuclear reaction dynamics
The fragment angular anisotropies Aexp are found by extrapolating the fission angular distributions to angles 0◦ and 90◦ by the method used in Ref. [5]
Taking into account the dependence of the fission barrier (Bf) of the rotating compound nucleus (CN) on its angular momentum we found a value of at which Bf disappears using the rotating finite range model by A
Summary
Studies of fusion-fission reactions between heavy ion projectile and heavy target nuclei have demonstrated to be very useful in developing an understanding of the nuclear reaction dynamics. With the development of radioactive nuclear beams and the superheavy element synthesis, this study is becoming a hot topic again [1,2,3,4]. In this paper we have analyzed the angular distributions of fission fragments of the 32S+184W reaction and we obtained fission excitation functions. The fragment angular anisotropies Aexp are found by extrapolating the fission angular distributions to angles 0◦ and 90◦ by the method used in Ref. The mean square angular momentum L2 values were obtained. Hereafter we use for simplicity from the definition L =. We assumed the calculated capture cross sections to be equal to the experimentally measured cross section for fission-like fragments, and further decompose the measured fission cross section into fusionfission, quasifission and fast fission contributions by the dinuclear system model [6]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
