direct evidence of fadeout of collective enhancement in nuclear level density

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ID: 237425
2017
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Abstract
The phenomenon of collective enhancement in nuclear level density and its fadeout has been probed using neutron evaporation study of two strongly deformed (173Lu, 185Re), and one spherical (201Tl) compound nuclei over the excitation energy (E⁎) range of ∼22–56 MeV. Clear signature of the fadeout of collective enhancement in nuclear level density was observed for the first time in both the deformed evaporation residues 172Lu and 184Re at an excitation energy range ∼14–21 MeV. Calculations based on finite temperature density functional theory, as well as macroscopic–microscopic shape transition model, have strongly established a close correlation between the observed fadeout of collective enhancement and a deformed to spherical nuclear shape transition in these nuclei occurring in the same excitation energy zone. Interestingly, a weak signature of fadeout has also been observed for the spherical residue 200Tl. This is due to a similar shape transition of the deformed excited state configuration of 200Tl.
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banerjee2017physicsdirect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;K. Banerjee;Pratap Roy;Deepak Pandit;Jhilam Sadhukhan;S. Bhattacharya;C. Bhattacharya;G. Mukherjee;T.K. Ghosh;S. Kundu;A. Sen;T.K. Rana;S. Manna;R. Pandey;T. Roy;A. Dhal;Md.A. Asgar;S. Mukhopadhyay
Journal ACS chemical biology
Year 2017
DOI
10.1016/j.physletb.2017.06.033
URL
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