Single particle configurations in Ni 61

S. Samanta, S. Das, R. Bhattacharjee, S. Chatterjee, R. Raut, S. S. Ghugre, A. K. Sinha, U. Garg, Neelam, N. Kumar, P. Jones, Md S.R. Laskar, F. S. Babra, S. Biswas, S. Saha, P. Singh, R. Palit

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Abstract

Excited states of the Ni61 (Z=28,N=33) nucleus have been probed using heavy-ion-induced fusion evaporation reaction and an array of Compton suppressed germanium (clover) detectors as detection system for the emitted γ rays. Seventeen new transitions have been identified and placement of six transitions have been modified with respect to the previous measurements, following which the level scheme of the nucleus has been extended up to an excitation energy Ex≈7 MeV and spin ≈10. Higher excitations involving the g9/2 orbital in the fpg model space have been established. The experimental results on the level structure of the nucleus have been interpreted in the light of large basis shell model calculations that lead to an understanding of the single particle configurations underlying the level structure of the nucleus. The comparison can be suggestive of further refinements in the shell model interactions for better overlap of the theoretical results with the experimental data.

Original languageEnglish
Article number014315
JournalPhysical Review C
Volume99
Issue number1
DOIs
StatePublished - 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 American Physical Society.

Funding

The authors wish to thank the staff of the Pelletron LINAC Facility at TIFR, Mumbai, for their help and support during the experiment. Our deepest gratitude to Smt. Deepa Teksingh Pujara of the Target Laboratory at TIFR for her guidance, help and active contribution during the target fabrication exercise. Help and support received from Mr. Kausik Basu (UGC-DAE CSR, KC), Mr. B. S. Naidu, Mr. S. Jadhav, and Mr. R. Donthi (TIFR), during the experiment, is appreciated. We are grateful to the Nuclear Data Review Group at NNDC, Brookhaven National Laboratory, for the data consistency check on the manuscript and the least-squares fit calculation of the level energies. This work is partially supported by the Department of Science and Technology, Government of India (No. IR/S2/PF-03/2003-II) and the US National Science Foundation (Grant No. PHY1762495).

FundersFunder number
US National Science Foundation
Department of Science and Technology, Ministry of Science and Technology, IndiaIR/S2/PF-03/2003-II

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