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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13885
Title: Giant dipole resonance studies in Ba isotopes at E/A≈5 MeV
Authors: Ghosh C.
Kumar A.K.R.
Dey B.
Nanal V.
Pillay R.G.
Arumugam P.
Anoop K.V.
Dokania N.
Garai A.
Gupta G.
Mirgule E.T.
Mishra G.
Mondal D.
Pal S.
Pose M.S.
Rout P.C.
Published in: Physical Review C
Abstract: Exclusive measurements of high-energy γ rays have been performed in Ba124 and Ba136 at the same excitation energy (∼49MeV) to study the properties of the giant dipole resonance (GDR) over a wide N/Z range. The high-energy γ rays are measured in coincidence with the multiplicity of low-energy γ rays to disentangle the effect of temperature (T) and angular momentum (J). The GDR parameters are extracted employing a simulated Monte Carlo statistical model analysis. The observed γ-ray spectra of Ba124 can be explained with prolate deformation, whereas a single-component Lorentzian function which corresponds to a spherical shape could explain the γ-ray spectra of Ba136. The observed GDR width in Ba136 is narrower compared to that of Ba124. The statistical model best-fit GDR cross sections are found to be in reasonable agreement with the thermal shape fluctuation model (TSFM) calculations. Further, it is shown that the variation of GDR width with T is well reproduced by the TSFM calculations over the temperature range of 1.1-1.7 MeV. © 2017 American Physical Society.
Citation: Physical Review C (2017), 96(1): -
URI: https://doi.org/10.1103/PhysRevC.96.014309
http://repository.iitr.ac.in/handle/123456789/13885
Issue Date: 2017
Publisher: American Physical Society
ISSN: 24699985
Author Scopus IDs: 56435652900
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16068034900
57195138473
54885277900
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57195131935
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24339612600
Author Affiliations: Ghosh, C., Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai, 400005, India
Kumar, A.K.R., Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai, 400005, India, Department of Phys
Corresponding Author: Nanal, V.; Department of Nuclear and Atomic Physics, Tata Institute of Fundamental ResearchIndia; email: nanal@tifr.res.in
Appears in Collections:Journal Publications [PH]

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