Role of Polar vs Non-polar Configurations in the Decay of 268Sg* Compound Nucleus Within the Skyrme Energy Density Formalism

Rajni Mittal,M K Sharma,Kirandeep Sandhu

doi:10.15415/jnp.2021.91011

Rajni Mittal, M K Sharma + Show 1 more

Open Access

https://doi.org/10.15415/jnp.2021.91011

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Publication Date: Aug 31, 2021
Citations: 1	License type: CC BY 4.0

Affiliation: Central University of Jammu, Government Medical College

Abstract

The effect of polar and non-polar configurations is investigated in the decay of 268Sg* compound nucleus formed via spherical projectile (30Si) and prolate deformed target (238U) using the dynamical cluster decay model. The SSK and GSkI skyrme forces are used to investigate the impact of polar and nonpolar (equatorial) configurations on the preformation probability P0 and consequently on the fission cross-sections of 268Sg* nucleus. For non-polar configuration some secondary peaks corresponding to magic shells Z=28 and N=50 are observed, whose magnitude is significantly suppressed for the polar counterpart. The effect of polar and non-polar configurations is further analyzed in reference to barrier lowering parameter ΔVB. The calculated fission cross-section find adequate agreement with experimental data for chosen set of skyrme forces.

Highlights

For the production of super heavy elements the choice of appropriate target projectile combination is extremely important which in-turn leads to cold and hot fusion reactions
The effect of polar and non-polar configurations is investigated in the decay of 268Sg* compound nucleus formed via spherical projectile (30Si) and prolate deformed target (238U) using the dynamical cluster decay model
Pb and Bi targets are used at below barrier energies, whereas the use of actinide target leads to hot fusion reactions which take place at relatively higher excitation energies [1,2]

Summary

Introduction

For the production of super heavy elements the choice of appropriate target projectile combination is extremely important which in-turn leads to cold and hot fusion reactions. At above-barrier energies the calculations were carried out by considering hot-equatorial configuration of nuclei, whereas at sub-barrier energies the cold-polar orientations were included. Xi, ti, αi, W0 are the skyrme force parameters, fitted by different authors to obtain better descriptions of various asymmetric peaks Within both the configurations, the SSK ground state properties of nuclei. Within SEDF [11,12], the nucleus-nucleus interaction in one set of calculation and bring out the nuclear structure information in terms of preformation probability P0 of decaying fragments. According to DCM, the decay cross-sections in potential is defined as the difference of energy expectation terms of the partial wave analysis is define as: value E of colliding nuclei that are overlapping (at a finite separation distance R) and are completely separated (at R = ∞).

Calculation and Result

Summary