Systematic study of Po192,202,206,210 compound nuclei using neutron multiplicity as a probe

Ruchi Mahajan, B. R. Behera, Meenu Thakur, Gurpreet Kaur, Priya Sharma, Kushal Kapoor, A. Kumar, P. Sugathan, A. Jhingan, A. Chatterjee, N. Saneesh, A. Yadav, R. Dubey, Neeraj Kumar, Hardev Singh, A. Saxena, and Santanu Pal
Phys. Rev. C 98, 034601 – Published 4 September 2018

Abstract

In the present work we have measured pre- and post-scission neutron multiplicities (Mpre and Mpost) from two compound nuclei, namely Po192,202 populated by Ti48+Sm144,154 systems at 72 MeV of excitation energy using the National Array of Neutron Detectors (NAND) facility at IUAC, New Delhi. Statistical model analysis has been performed for Ti48+Sm144,154 along with already existing data for C12+Pt194 and O18+Os192 covering compound nuclei of Po (Po192,202,206,210) with neutron number NC=108, 118, 122, and 126 respectively. Variation of experimental Mpre with N/Z of the compound nucleus does not show any special feature at neutron shell closure (NC=126) at compound nucleus excitation energy around 72 MeV considered here. In particular, it is found that dissipation alone is unable to reproduce the experimental Mpre for Po192, and the role of entrance channel dynamics should be considered in future works.

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  • Received 23 September 2017
  • Revised 15 January 2018

DOI:https://doi.org/10.1103/PhysRevC.98.034601

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Ruchi Mahajan*, B. R. Behera, Meenu Thakur, Gurpreet Kaur, Priya Sharma, Kushal Kapoor, and A. Kumar

  • Department of Physics, Panjab University, Chandigarh 160014, India

P. Sugathan, A. Jhingan, A. Chatterjee, N. Saneesh, A. Yadav, and R. Dubey

  • Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India

Neeraj Kumar

  • Department of Physics and Astrophysics, University of Delhi 110067, India

Hardev Singh

  • Department of Physics, Kurukshetra University, Kurukshetra 136119, India

A. Saxena

  • Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India

Santanu Pal

  • CS-6/1, Golf Green, Kolkata 700095, India

  • *ruchimahajan4@gmail.com
  • Corresponding author: bivash@pu.ac.in
  • Formerly with VECC, Kolkata.

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Issue

Vol. 98, Iss. 3 — September 2018

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