Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-09-06
Phys.Rev.C54:3290-3293,1996
Physics
Nuclear Physics
Nuclear Theory
12 pages, 3 Figures available upon request, Submitted at Phys. Rev. C
Scientific paper
10.1103/PhysRevC.54.3290
The entrance-channel mass-asymmetry dependence of the compound nucleus formation time in light heavy-ion reactions has been investigated within the framework of semiclassical dissipative collision models. the model calculations have been succesfully applied to the formation of the $^{38}$Ar compound nucleus as populated via the $^{9}$Be+$^{29}$Si, $^{11}$B+$^{27}$Al, $^{12}$C+$^{26}$Mg and $^{19}$F+$^{19}$F entrance channels. The shape evolution of several other light composite systems appears to be consistent with the so-called "Fusion Inhibition Factor" which has been experimentally observed. As found previously in more massive systems for the fusion-evaporation process, the entrance-channel mass-asymmetry degree of freedom appears to determine the competition between the different mechanisms as well as the time scales involved.
Beck Ch.
Carlson Brett Vern
de Toledo Szanto A.
Thoenessen M.
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