• Letter

New experimental approach for developing a mass-energy systematics for precompound emission

Manoj Kumar Sharma, Mamta Sarswat, Sushant Arora, Satyendra Kumar, Mohd. Shuaib, Ishfaq Majeed, M. Shariq Asnain, B. P. Singh, R. Prasad, Vijay Raj Sharma, Abhishek Yadav, Pushpendra P. Singh, and Devendra P. Singh
Phys. Rev. C 104, L031601 – Published 14 September 2021

Abstract

A systematic analysis of the experimental cross-section data in odd mass number (A) and odd atomic number (Z) nuclei is reported to reveal a novel mass-energy systematics for the pre-compound emission of fast neutrons in α-induced reactions at low energies. The experimental excitation functions have been analyzed within the framework of statistical model predictions to get information regarding pre-compound emission. The present analysis establishes for first time an interesting systematics, emphasizing that accessible excitation energy on peripheral nucleons of the systems is an exponential function of atomic mass number (A) of target nuclei. One of the most important features of this systematics is to provide a precise estimation of the pre-compound contribution for any nuclei, except closed-shell ones, over a wide range of mass number 63A109 in the nuclear landscape. New results of the present analysis emphasize an additional subtle interconnection between the structure of nuclei and the nuclear reaction mechanism of the pre-compound emission process at low energies, where the compound nucleus process is more likely to be dominant.

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  • Received 6 July 2021
  • Accepted 11 August 2021

DOI:https://doi.org/10.1103/PhysRevC.104.L031601

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Manoj Kumar Sharma*, Mamta Sarswat, Sushant Arora, and Satyendra Kumar

  • Department of Physics, Shri Varsheny College, Aligarh 202001, India

Mohd. Shuaib, Ishfaq Majeed, M. Shariq Asnain, B. P. Singh, and R. Prasad

  • Department of Physics, Aligarh Muslim University, Aligarh 202002, India

Vijay Raj Sharma

  • Fysikum, Stockholms Universitet, SE-106 91 Stockholm, Sweden

Abhishek Yadav

  • Department of Physics, Jamia Millia Isalamia, New Delhi 110025, India

Pushpendra P. Singh

  • Department of Physics, Indian Institute of Technology, Ropar, Rupnagar 140001, Punjab, India

Devendra P. Singh

  • Department of Physics, University of Petroleum and Energy Studies, Dehradun 248007, India

  • *Corresponding author: manojamu76@gmail.com
  • bpsinghamu@gmail.com

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Issue

Vol. 104, Iss. 3 — September 2021

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