Title: Quantum mechanical calculations of fusion reactions induced by multi-neutron halo systems below and above Coulomb barrier

Authors: Fatima M. Hussain; Fouad A. Majeed

Addresses: Department of Physics, College of Education for Pure Sciences, University of Babylon, Babylon, Iraq ' Department of Physics, College of Education for Pure Sciences, University of Babylon, Babylon, Iraq

Abstract: The role of breakup channel in fusion reactions involving two and four neutron halos is discussed in this paper. The cross-sections σ_fus, barrier distributions D_fus, probability of fusion P_fus, and the mean angular momentum (L) were calculated utilising quantum mechanics by means of the CC code. The systems ⁴He+⁶⁵Cu, ⁶He+⁶⁴Zn and ⁶He+¹⁹⁷Au were used as base systems to study the fusion reaction for the systems ⁶He+⁶⁵Cu, ⁸He+⁶⁵Cu, ⁶He+⁶³Cu, ⁶He+¹⁹²Os to understand the effect of breakup of ⁶He and ⁸He halo nuclei. The Woods-Saxon parameters for the studied systems were fitted using the χ² method to fit the centroid to the experimental height barrier V_b. The comparison of theoretical results with the corresponding experimental data shows clearly that for these halo systems the breakup channel plays crucial role in the calculations and should be taken into consideration to enhance the calculations especially below the Coulomb barrier V_b.

Keywords: fusion cross-section; mean angular momentum; fusion barrier distribution; breakup channel.

DOI: 10.1504/IJNEST.2021.120137

International Journal of Nuclear Energy Science and Technology, 2021 Vol.15 No.1, pp.23 - 35

Accepted: 10 Sep 2021
Published online: 07 Jan 2022 *