N/Z dependence of decay channels in A=80 compound nuclei

Manpreet Kaur, BirBikram Singh, Sarbjeet Kaur, and Raj K. Gupta
Phys. Rev. C 99, 014614 – Published 16 January 2019

Abstract

A comparative decay analysis of Zr*80, Sr*80, and Kr*80 isobaric nuclear systems formed in Ca40+Ca40, O16+Zn64, and S32+Ca48 reactions, respectively, has been conducted to investigate the N/Z dependence of different decay modes within a dynamical cluster-decay model based on the collective clusterization approach of quantum mechanical fragmentation theory. The comparative contributions of the emission of light particles (LPs), intermediate mass fragments (IMFs), and symmetric mass fragments (SMFs) in the total fusion cross-sections, σfusion, have been calculated. The results show that LPs have a major contribution to σfusion in the decay of all three compound nuclei (CN). The percentage contribution of LPs is larger for CN with higher N/Z ratio. The IMFs and SMFs cross-section are comparatively low in the total σfusion but their emissions are in competition in the decay process. The results show that the shape of mass distribution evolves from symmetric to asymmetric with increasing N/Z ratio. The yield around SMFs is greater for the system having the lowest N/Z ratio. This may be attributed to higher P0 for the symmetric exit channel, particularly at higher values. The calculated fusion cross-sections for all three CN are in good agreement with the experimental data.

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  • Received 26 July 2018

DOI:https://doi.org/10.1103/PhysRevC.99.014614

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Manpreet Kaur1,*, BirBikram Singh1,†, Sarbjeet Kaur1, and Raj K. Gupta2

  • 1Department of Physics, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, India
  • 2Department of Physics, Panjab University, Chandigarh 160014, India

  • *Current affiliation: Institute of Physics, Bhubaneswar 751005, India; manpreetphys@gmail.com
  • birbikramsingh@sggswu.edu.in

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Vol. 99, Iss. 1 — January 2019

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