• S K Ghorui

      Articles written in Pramana – Journal of Physics

    • Deformed configurations, band structures and spectroscopic properties of $N = 50$ Ge and Se nuclei

      S K Ghorui C R Praharaj

      More Details Abstract Fulltext PDF

      The deformed configurations and rotational band structures in $N=50$ Ge and Se nuclei are studied by deformed Hartree–Fock with quadrupole constraint and angular momentum projection. Apart from the `almost’ spherical HF solution, a well-deformed configuration occurs at low excitation. A deformed well-mixed $\Omega = 1/2^+$ neutron orbit comes down in energy (from the shell above $N = 50$) to break the $N = 50$ spherical shell closure. A 𝐾 = 7 isomer is predicted in 84Se at fairly low excitation energy. At higher excitation energies (8 MeV), a deformed band with 𝛺 = 7/2+–1/2 (based on $h_{11/2}$) neutron 1p–1h excitation, for 82Ge and 84Se, is shown in our calculation. Our study gives insight into possible deformed structures at spherical shell closure.

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