Entrance-channel mass-asymmetry dependence of compound nucleus formation time in light heavy-ion reactions

Dissipative collisions in16O+27Alat<

“…This is expected because the heavier fragments ( nearer to the projectile ) require less number of nuleon transfer and therefore less time; on the other hand the emission of lighter fragments requires exchange of more number of nucleons and therefore longer times. Our quantitative analysis is consistent with a recent qualitative study of formation time in light heavy ion reactions [21].…”

Study of the fusion-fission process in the 35Cl +24Mg reaction

“…Their yields are, for instance, successfully described by statistical models based on either the saddle point picture [4] or the scission point picture [29]. This makes the hypothesis of the fully-damped fragments as being due, to a large extend, to a FF process quite reasonable in accordance with previous systematic studies [1,10,12].…”

“…In previous experiments using projectiles of mass A proj = 32 to 40 on various targets, events corresponding to the emission of three heavy fragments (A ≥ 6) have been found to occur significantly (at a 10 % level) only at much higher bombarding energies (10)(11)(12)(13)(14)(15) MeV/nucleon) [21,[38][39][40]. Sequential fission decay was clearly observed for fragments resulting from reactions of 58 Ni+ 58 Ni at 15.3 MeV/nucleon [20].…”

Characterization of fragment emission inNe20(7–10 MeV/nucleon)+C12Dey1, Bhattacharya2, Bhattacharya3 et al. 2007Phys. Rev. CSelf Cite19020View full textAdd to dashboardCite

“…The origin of these fragments extends from quasi-elastic (QE)/ projectile breakup [2,3], deep-inelastic (DI) transfer and orbiting [4,6,12,13,14,15,16], to fusion-fission (FF) [18,19,20,21,22,23] processes; and in some cases the structure of the nuclei has been found to play an important role. In most of the reactions studied, the observed fully energy-damped yields of the fragments have been successfully explained in terms of fusion-fission (FF) mechanism [18,19,20,21,22,23]. However, the reactions involving α -cluster nuclei (e.g., 20 Ne + 12 C [12,13], 24 Mg + 12 C [16], 28 Si + 12 C [14,24] etc.)…”