Possible origin of transition from symmetric to asymmetric fission

Abstract

The charged distributions of fragments produced in the electromagnetic-induced fission of the even-even isotopes of Rn, Ra, Th, and U are described within an improved scission-point model and compared with the available experimental data. The three-equal-peaked charge distributions are predicted for several fissioning nuclei with neutron number N=136. The possible explanation of the transition from a symmetric fission mode to an asymmetric one around N∼136 is presented. The excitation energy dependencies of the asymmetric and symmetric fission modes are anticipated.

Original language	English
Pages (from-to)	800-806
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	760
DOIs	https://doi.org/10.1016/j.physletb.2016.07.074
Publication status	Published - 10 Sep 2016

Keywords

Binary fission
Charge distributions
Dinuclear system model
Scission-point model

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2016.07.074

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Paşca, H., Andreev, A. V., Adamian, G. G., & Antonenko, N. V. (2016). Possible origin of transition from symmetric to asymmetric fission. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 760, 800-806. https://doi.org/10.1016/j.physletb.2016.07.074

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keywords = "Binary fission, Charge distributions, Dinuclear system model, Scission-point model",

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AB - The charged distributions of fragments produced in the electromagnetic-induced fission of the even-even isotopes of Rn, Ra, Th, and U are described within an improved scission-point model and compared with the available experimental data. The three-equal-peaked charge distributions are predicted for several fissioning nuclei with neutron number N=136. The possible explanation of the transition from a symmetric fission mode to an asymmetric one around N∼136 is presented. The excitation energy dependencies of the asymmetric and symmetric fission modes are anticipated.

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KW - Charge distributions

KW - Dinuclear system model

KW - Scission-point model

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