A Systematic Study on 1 neutron and 2neutron Halo Nuclei Using Coulomb and Nuclear Proximity Potential

摘要

The halo-structure of a nucleus is analyzed on the basis of potential energy consideration and separation energy calculations and thereby characterized a nucleus as a halo nucleus. The separation energy analysis showed that Be-11, B-14, (15,) (17,) C-19, N-22, O-23, (24,) F-26, and Ne-29 are In-halo nuclei since the In separation energy S(n) is the lowest and (6,) He-8, Li-11, Be-14, B-17, C-22, and F-29 are 2n-halo candidates as 2n separation energy S(2n) is the lowest. The potential energy calculations are consistent with the predictions based on separation energy calculations except for Be-12, B-19, and F-27 which can be considered as 2n-halo candidates by potential energy consideration. Also, a discrepancy is noticed in the case of the proposed 2n-halo He-8 and B-17 nuclei. Further, the possibility of emitting halo nucleus via heavy particle decay of heavy nuclei, within the range 82 = Z = 102, has been studied using the Coulomb and proximity potential model (CPPM). It is observed that the probability of emission of a halo nucleus is lower than that of a normal cluster Nevertheless, there is a finite chance of emission of a halo nucleus in the decay of a heavy nucleus.