Nuclear Level Density and $\gamma$-ray Strength Function of $^{63}\mathrm{Ni}$

Vetle W. Ingeberg; Pete Jones; Lumkile Msebi; Sunniva Siem; Mathis Wiedeking; Abraham Aungwa; Maluba V. Chisapi; Elena Lawrie; Kgashane Malatji; Lucky Makhathini; Sive Noncolela; Obed Shirinda

doi:10.1103/PhysRevC.106.054315

Nuclear Level Density and $\gamma$-ray Strength Function of $^{63}\mathrm{Ni}$

Nuclear Experiment 2023-07-17 v1

Authors: Vetle W. Ingeberg , Pete Jones , Lumkile Msebi , Sunniva Siem , Mathis Wiedeking , Abraham Aungwa , Maluba V. Chisapi , Elena Lawrie , Kgashane Malatji , Lucky Makhathini , Sive Noncolela , Obed Shirinda

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Abstract

The nuclear level density (NLD) and $\gamma$ -ray strength function ( $\gamma$ SF) of $^{63}\mathrm{Ni}$ have been investigated using the Oslo method. The extracted NLD is compared with previous measurements using particle evaporation and those found from neutron resonance spacing. The $\gamma$ SF was found to feature a strong low energy enhancement that could be explained as M1 strength based on large scale shell model calculations. Comparison of $\gamma$ SFs measured with the Oslo method for various $\mathrm{Ni}$ isotopes reveals systematic changes to the strength below $5$ MeV with increasing mass.

Keywords

nuclear symmetry energy nuclear physics nuclear structure

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@article{arxiv.2207.01571,
  title  = {Nuclear Level Density and $\gamma$-ray Strength Function of $^{63}\mathrm{Ni}$},
  author = {Vetle W. Ingeberg and Pete Jones and Lumkile Msebi and Sunniva Siem and Mathis Wiedeking and Abraham Aungwa and Maluba V. Chisapi and Elena Lawrie and Kgashane Malatji and Lucky Makhathini and Sive Noncolela and Obed Shirinda},
  journal= {arXiv preprint arXiv:2207.01571},
  year   = {2023}
}

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Submitted to Phys. Rev. C

Nuclear Level Density and $\gamma$-ray Strength Function of $^{63}\mathrm{Ni}$

Abstract

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