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Shape evolution in 76,78Kr nuclei at high spins in tilted axis cranking Hartree-Fock-Bogoliubov approach

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Abstract

A two-dimensional tilted axis cranking Hartree-Fock-Bogoliubov (CHFB) calculation is performed for 76Kr and 78Kr nuclei up to high spins J = 30 employing a pairing-plus-quadrupole (PPQ) model interaction Hamiltonian. Intricate details of the evolution of single particle structures and shapes as a function of spin have been investigated. The results show the existence of energy levels with high K quantum numbers lying close to the yrast line in both the nuclei. Such high K states should exhibit isomeric characteristics due to the K-selection rules for the γ-decays. Moreover, in 78Kr a new band with J = 20–30 lying below the observed ground band is predicted.

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Authors and Affiliations

  1. Institute of Physics, Bhubaneswar, 751 005, India

    A. Ansari

  2. Department of Physics, Rajasthan University, Jaipur, 302 004, India

    P. Sharma, U. R. Jakhar & H. L. Yadav

  3. Department of Physics, Banaras Hindu University, Varanasi, 221 005, India

    H. L. Yadav

Authors
  1. A. Ansari
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  2. P. Sharma
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  3. U. R. Jakhar
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  4. H. L. Yadav
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Ansari, A., Sharma, P., Jakhar, U.R. et al. Shape evolution in 76,78Kr nuclei at high spins in tilted axis cranking Hartree-Fock-Bogoliubov approach. Pramana - J Phys 68, 105–110 (2007). https://doi.org/10.1007/s12043-007-0012-x

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  • DOI: https://doi.org/10.1007/s12043-007-0012-x

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