Neutron Multiplicity Measurements for ¹⁹F+^194,196,198Pt Systems to Investigate the Effect of Shell Closure on Nuclear Dissipation

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.87.064601· OSTI ID:1093111

Singh, Varinderjit ^[1]; Behera, B. R. ^[1]; Kaur, Maninder ^[1]; Kumar, A. ^[1]; Sugathan, P. ^[2]; Golda, K. S. ^[2]; Jhingan, A. ^[2]; Chatterjee, M. B. ^[2]; Bhowmik, R. K. ^[2]; Siwal, Davinder ^[3]; Goyal, S. ^[3]; Sadhukhan, Jhilam ^[4]; Pal, Santanu ^[5]; Saxena, A. ^[6]; Santra, S. ^[6]; Kailas, S. ^[6]

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1. Panjab University, Chandigarh, India
2. Inter University Accelerator Centre, New Delhi, India
3. Delhi University, Delhi, India
4. UTK/ORNL
5. Variable Energy Cyclotron Centre, Kolkata, India
6. Bhabha Atomic Research Centre, Mumbai, India

Pre- and post-scission neutron multiplicities are measured for the three isotopes of Fr (²¹⁷Fr, ²¹⁵Fr, and ²¹³Fr) in the excitation energy range of 48 91.8 MeV. Out of these three isotopes, 213Fr has shell closure (N_C = 126) while the other two are non-closed-shell nuclei. Statistical model calculations using Kramers fission width are performed to investigate shell effects on the dissipation strength which fit the experimental data. It is observed that shell correction to the binding energies of the evaporated particles strongly affects the fitted values of the dissipation strength. However, the best-fit dissipation strength is only weakly influenced by the inclusion of shell correction in fission barrier.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1093111
• Journal Information: Physical Review C, Vol. 87, Issue 6; ISSN 0556--2813
• Country of Publication: United States
• Language: English