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      https://www.ias.ac.in/article/fulltext/pram/077/02/0277-0287

    • Keywords

       

      Nuclear reaction 100Mo(20Ne, $p6n$), $E = 136$ MeV; 113Sb; measured 𝛾-ray energies and intensities; $\gamma \gamma$-coincidences; DCO ratios; Doppler shifts.

    • Abstract

       

      In the present work, the excited states of 113Sb were populated in the 100Mo(20Ne, $p6n$) reaction at a beam energy of 136 MeV. States only up to $59/2^−$ were observed in the $\Delta J = 2$ band. Mean lifetimes for the five states (from 4460 to 7998 keV) were measured for the first time using Doppler shift attenuation method. An upper limit of the lifetime (0.14 ps) was estimated for the 9061 keV, $47/2^−$ state. The $B(E2)$ values, derived from the present lifetime results, correspond to a large quadrupole deformation of $\beta_2 = 0.32$. The observed reduction in the experimental $B(E2)$ values for the 918.4 keV (spin $39/2^− \to 35/2^−$) and 985 keV (spin $43/2^− \to 39/2^−$) transitions may be interpreted as due to the proton alignement in the $g_{7/2}$ orbital. The dynamic moment of inertia was observed to be about half of the rigid body value at the highest observed frequency.

    • Author Affiliations

       

      S Ganguly1 P Banerjee2 A Dey3 S Bhattacharya2

      1. Department of Physics, Chandernagore College, Chandernagore, Hooghly 712 136, India
      2. Nuclear and Atomic Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata 700 064, India
      3. Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700 064, India
    • Dates

       
  • Pramana – Journal of Physics | News

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