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Title: Signature of incomplete fusion reaction in 20Ne + 159Tb system: Entrance channel parameters effect
Authors: Ali, Rahbar
Singh, D
Kumar, Harish
Tali, Suhail A
Ansari, M Afzal
Rashid, M H
Keywords: Complete and incomplete fusion reactions;Excitation function measurements;Mass-asymmetry;Projectile structure effect;α-Q-value systematic
Issue Date: Aug-2019
Publisher: NISCAIR-CSIR, India
Abstract: More complex and interesting phenomenon of incomplete fusion (ICF) reactions induced by 20Ne on 159Tb have been measured at several beam energies range of 4.3 - 8.2 MeV/A by using catcher foil technique followed by the gamma-ray spectrometry. The cumulative cross-sections of evaporation residues produced in above reaction have been measured and deduced independent cross-sections have been compared with statistical model based computer code PACE-2. The complete fusion (CF) channels pxn agrees well with PACE-2 predictions after the subtraction of precursor contribution. The alpha emission products show higher cross-section than that predicted by the complete fusion product, which is attributed to the presence of incomplete fusion of projectile with target at lower energies. This enhancement in the measured cross-section is attributed to the fact that these residues are formed not only by complete fusion but also through the ICF of 20Ne into α clusters, i.e., 20Ne into 16O+α and/or 12C+2α etc. For the better understanding of ICF, the incomplete fusion fraction has also been deduced and its sensitivity with various channel parameters like projectile energy, entrance channel mass-asymmetry, α-Q value, Coulomb effect (ZPZT), deformation parameter (β2) have been observed.
Page(s): 570-575
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJPAP Vol.57(08) [August 2019]

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