Eur. Phys. J. A (2018) 54: 80
https://doi.org/10.1140/epja/i2018-12512-8

Regular Article - Theoretical Physics

Theoretical studies on the synthesis of SHE ^290-302Og (Z=118) using ⁴⁸Ca, ⁴⁵Sc, ⁵⁰Ti, ⁵¹V, ⁵⁴Cr, ⁵⁵Mn, ⁵⁸Fe, ⁵⁹Co and ⁶⁴Ni induced reactions

School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, 670327, Payyanur, Kerala, India

^* e-mail: drkpsanthosh@gmail.com

Received: 3 December 2017
Accepted: 16 April 2018
Published online: 17 May 2018

Abstract

Using the phenomenological model for production cross section (PMPC), the production cross sections for the synthesis of isotopes of superheavy element Og (Z = 118) using the fusion reactions ⁴⁸Ca+^249-254Cf ^297-302Og, ⁴⁵Sc+^247,249Bk ^292,294Og, ⁵⁰Ti + ^242-248,250Cm ^292-298,300Og, ⁵¹V+^241,243Am ^292,294Og, ⁵⁴Cr + ^238-242,244Pu ^292-296,298Og, ⁵⁵Mn + ^235-237Np ^290-292Og, ⁵⁸Fe + ^{232-236, 238}U ^290-294,296Og, ⁵⁹Co + ²³¹Pa ²⁹⁰Og, and ⁶⁴Ni + ^228-230,232Cm ^292-294,296Og in evaporation channel have been systematically studied at energies near and above the Coulomb barrier. We have predicted most suitable projectile-target combinations for the synthesis of isotopes ^290-302Og among these reactions. Our calculated evaporation residue (ER) cross section values for the reaction ⁴⁸Ca + ²⁴⁹Cf ²⁹⁷Og is in excellent agreement with available experimental values. For the synthesis of Og, among all the reactions mentioned above, the 3n channel cross section (2458 fb) is larger for ⁴⁸Ca + ²⁵¹Cf ²⁹⁹Og; 4n channel cross section (212 fb) is larger for ⁴⁸Ca + ²⁵²Cf ³⁰⁰Og and 5n channel cross section (34 fb) is larger for ⁴⁸Ca + ²⁵³Cf ³⁰¹Og. The second largest 3n channel cross section (1143 fb) is obtained for the reaction, ⁵⁰Ti + ²⁴⁵Cm ²⁹⁵Og. Our studies will be useful for the future experiments to synthesize the isotopes of element Og which are not synthesized so far. We have also studied the effect of the use of mass values and shell correction of the Warsaw group which leads to a smaller ER cross section compared to the Moller group.