EPJ Web of Conferences (Jan 2015)

Spin gated GDR widths at moderate temperatures

  • Mukul Ish,
  • Sugathan P.,
  • Gehlot J.,
  • Mohanto G.,
  • Rhine Kumar A. K.,
  • Mazumdar I.,
  • Kaur Maninder,
  • Madhavan N.,
  • Nath S.,
  • Dubey R.,
  • Banerjee T.,
  • Saneesh N.,
  • Gothe D. A.,
  • Arumugam P.,
  • Roy A.

DOI
https://doi.org/10.1051/epjconf/20158600029
Journal volume & issue
Vol. 86
p. 00029

Abstract

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We present the evolution of giant dipole resonance (GDR) width as a function of angular momentum in the compound nucleus 144Sm in the temperature range of 1.5-2.0 MeV. The high energy γ rays emitted from the decay of excited 144Sm were measured using large NaI detector in coincidence with 4π sum spin spectrometer. GDR widths were found to comply with thermal shape fluctuation model in this temperature range over a wide range of spin. Experimental widths tend to increase rapidly at high angular momentum values.