Effect of deformations on the compactness of odd-Z superheavy nuclei formed in cold and hot fusion reactions

Using the extended fragmentation theory, the compactness of hot and cold fusion reactions is analyzed for odd-Z nuclei ranging Z = 105-117. The calculations for the present work are carried out at T = 0 MeV and l = 0h, as the temperature and angular momentum effects remain silent while addressing the orientation degree of freedom (i.e. compact angle configuration). In the hot fusion, Ca-48 (spherical) + actinide (prolate) reaction, the non-equatorial compact (nec) shape is obtained for Z = 113 nucleus. On the other hand, Z > 113 nuclei favor equatorial compact (ec) configuration. The distribution of barrier height (V-B) illustrate that the ec-shape is obtained when the magnitude of quadrupole deformation of the nucleus is higher than the hexadecupole deformation. In other words, negligible or small -ve beta(4)-deformations support ec configurations. On the other hand, large (+ve) magnitude of the beta(4)-deformation suggests that the configuration appears for compact angle theta(c) < 90 degrees, leading to nec structure. Similar deformation effects are observed for Bi-induced reactions, in which not belly-to-belly compact (nbbc) configurations are seen at theta(c) = 42 degrees. In addition to the effect beta(2) and beta(4)-deformations, the exclusive role of octupole deformations (beta(3)) is also analyzed. The beta(3)-deformations do not follow the reflection symmetry as that of beta(2) and beta(4), leading to the possible occurrence of compact configuration within 0 degrees to 180 degrees angular range. (C) 2018 Elsevier B.V. All rights reserved.