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Potential energy surfaces of Polonium isotopes

Abstract : The evolution of the potential energy landscape is analysed in detail for ten even–even polonium isotopes in the mass range 188 < A < 220 as obtained within the macroscopic–microscopic approach, relying on the Lublin–Strasbourg drop model and the Yukawa-folded single-particle energies for calculating the microscopic shell and pairing corrections. A variant of the modified Funny–Hills nuclear shape parametrization is used to efficiently map possible fission paths. The approach explains the main features of the fragment partition as measured in low-energy fission along the polonium chain. The latter lies in a transitional region of the nuclear chart, and will be essential to consistently understand the evolution of fission properties from neutron-deficient mercury to heavy actinides. The ability of our method to predict fission observables over such an extended region looks promising.
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Submitted on : Wednesday, January 20, 2016 - 11:44:49 AM
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B. Nerlo-Pomorska, K. Pomorski, C. Schmitt, J Bartel. Potential energy surfaces of Polonium isotopes. Physica Scripta, IOP Publishing, 2015, 90 (11), pp.114010. ⟨10.1088/0031-8949/90/11/114010⟩. ⟨in2p3-01259304⟩



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