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      https://www.ias.ac.in/article/fulltext/pram/079/03/0403-0415

    • Keywords

       

      HPGe; measured $E_\gamma$ ; $I_\gamma$ ; directional correlations from oriented states; lifetime; nuclear structure; 𝛾-ray spectroscopy; empirical shell model.

    • Abstract

       

      High-spin states of 216Ra $(Z = 88,N = 128)$ have been investigated through 209Bi(10B, 3n) reaction at an incident beam energy of 55 MeV and 209Bi(11B, 4n) reaction at incident beam energies ranging from 65 to 78 MeV. Based on $\gamma \gamma$ coincidence data, the level scheme for 216Ra has been considerably extended up to $\sim 33\hbar$ spin and 7.2 MeV excitation energy in the present experiment with placement of 28 new 𝛾-transitions over what has been reported earlier. Tentative spin-parity assignments are done for the newly proposed levels on the basis of the DCO ratios corresponding to strong gates. Empirical shell model calculations were carried out to provide an understanding of the underlying nuclear structure.

    • Author Affiliations

       

      S Muralithar1 G Rodrigues1 R P Singh1 R K Bhowmik1 2 P Mukherjee3 B Sethi3 I Mukherjee3

      1. Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110 067, India
      2. Department of Pure and Applied Physics, Guru Ghasidas University, Bilaspur 495 009, India
      3. Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064, India
    • Dates

       
  • Pramana – Journal of Physics | News

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