|Title:||Decoupling the effect of temperature on GDR widths in excited compound nucleus 144Sm|
Rhine Kumar A.K.
|Published in:||Journal of Physics G: Nuclear and Particle Physics|
|Abstract:||We measured giant dipole resonance (GDR) γ-rays in the 28Si + 116Cd reaction at ∼105 and 120 MeV excitation energies. The resonance widths were extracted as a function of temperature at different angular momentum values to decouple the effect of these two variables on resonance widths. The high energy GDR γ-rays from the decay of compound nucleus (CN) 144Sm were measured using a large NaI(Tl) detector in coincidence with a sum-spin multiplicity filter. The experimental data were analyzed under the framework of statistical decay of CN. The GDR cross sections were also calculated with a thermal shape fluctuation model (TSFM), which incorporates the temperature and spin dependent shell corrections within the Nilsson-Strutinsky approach. The GDR widths were extracted in the temperature range 1.5-2.2 MeV. The measured widths indicate that the increase of GDR widths with temperature at different average spin values follows a similar trend and is borne out by theoretical calculations. Present calculation shows that TSFM satisfactorily reproduces the GDR cross section as well as widths in the temperature range 1-2.2 MeV over a wide range of angular momentum. © 2014 IOP Publishing Ltd.|
|Citation:||Journal of Physics G: Nuclear and Particle Physics (2014), 41(11): -|
|Publisher:||Institute of Physics Publishing|
Deduced gamma-ray multiplicity
GDR gamma rays
Potential energy surfaces
Thermal shape fluctuation model
|Author Scopus IDs:||55327298600|
|Author Affiliations:||Mukul, I., Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, 110067, India|
Roy, A., Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, 110067, India, Variable Energy Cyclotron Centre, Kolkata, 700064, India
|Corresponding Author:||Mukul, I.; Inter University Accelerator Centre, Aruna Asaf Ali Marg, India|
|Appears in Collections:||Journal Publications [PH]|
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