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Title: Pre-equilibrium particle emission due to heavy and light ion interactions
Authors: Singh, D
Linda, Sneha B
Giri, Pankaj K
Mahato, Amritraj
Shrotriya, Pramod K
Mishra, A K
Ansari, M Afzal
Keywords: Pre-equilibrium emission;Excitation functions;Pre-equilibrium fraction;Mass;Asymmetry;ALICE-91
Issue Date: Aug-2019
Publisher: NISCAIR-CSIR, India
Abstract: To understand the mechanism of pre-equilibrium particle emission using light and heavy ion beams with different targets at energy above the Coulomb barrier, a study has been done. The cross-sections for twelve systems 4He + 59Co, 4He +124Sn, 4He + 165Ho, 12C + 59Co, 12C +124Sn, 12C + 165Ho, 16O + 59Co, 16O + 124Sn, 16O + 165Ho, 19F + 59Co, 19F + 124Sn and 19F + 165Ho have been calculated using the statistical model code ALICE-91. Significant pre-equilibrium particle emission contribution has been obtained for lighter systems at higher projectile energy. It has also been found that the pre-equilibrium particle emission affects predominantly over the equilibrated compound nucleus emissions at high projectile energies. Pre-equilibrium fraction (FPEQ) has been deduced from the excitation function data for different systems at different projectile energies. The present results indicate that the probability of pre-equilibrium particle emission depends not only on a single entrance channel parameter, but it also depends on various entrance channel parameters, namely: projectile energy, mass of the projectile, mass of the target and entrance-channel mass asymmetry. The present analysis of the data also suggests that the pre-equilibrium particle emission contributes significantly at higher projectile energy for lighter mass projectile and target.
Page(s): 580-583
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJPAP Vol.57(08) [August 2019]

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