Complex fragment distributions in 84Kr+27Al at Elab=10.6 MeV/u

Extended Hauser-Feshbach method for statistical binary decay of light-mass systems

“…where the parameter ∆ s is the diffuseness parameter in the transmission coefficient formula whose value has been kept equal to 0.5 MeV in this study. This choice is consistent with the larger 1 MeV value which has been recently chosen for the EHFM description of a heavier mass system [8]. As far as we know, the energy dependence of the transmission coefficients obtained by the OM calculation are roughly fitted by the formula ( 16) and the chosen diffuseness parameter value is comparable to that of OM calculations in light-mass systems in the low angular momentum region.…”

“…The complete EHFM+CASCADE calculation is applied for a first-chance fission (or emission of excited complex fragments) followed by their light-particle sequential decays until the resulting products are unable to undergo further decay. This can be considered as a reasonable assumption for light-mass systems as shown previously for a medium light-mass fission reaction [8]. In Section IV, the calculated results are shown in the case of a simple parametrization and their applicability to the two selected reactions studied [7,9,15] is discussed (cross sections are plotted in Figs.…”

“…For heavy-ion induced reactions in both the low-and intermediate-energy regimes, the emission of complex fragments (or intermediate-mass fragments IMF's) has been considered to be one of the most useful probes for the investigation of the different reaction mechanisms involved in fission-like phenomena for a wide mass-range of nuclear systems [1][2][3][4][5][6][7][8]. It has been shown that for composite systems in the light mass region A CN ≤ 60, the fusion-fission (FF) process plays an important role in the compound nucleus (CN) decay [2,7,[9][10][11][12][13][14][15][16].…”

Analysis of the sequential fission observed in collisions of100Mo +100Mo and120Sn +120Sn around 20 A�MeV

“…Statistical model calculations incorporating all possible binary divisions and using angular momentum dependent conditional barriers predicted by the Rotating-Finite-Range-Model [25] have been successful in reproducing the shape and magnitude of the fragment charge distributions measured for 100 < A < 160 compound systems [13,21,26,27]. These studies include compound systems with little spin [21] or with spins up to 70 h [26] and with excitation energies up to 200 MeV [13,23]. Therefore, if the products of the deep-inelastic collisions studied in this work can be viewed as true compound nuclei, one expects that those calculations should be able to reproduce both the experimental fission probabilities (which can be derived according to [11]) and the shape of the mass-asymmetry distribution (see Fig.…”