Allowance for the shell structure of the {sub 42}{sup 100}Mo and {sub 46}{sup 110}Pd nuclei in the synthesis of {sub 84}{sup 200}Po, {sub 88}{sup 210}Ra, and {sub 92}{sup 220}U

Journal Article · Sun Jan 15 00:00:00 EST 2012 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778812010115· OSTI ID:22043805

Litnevsky, V. L., E-mail: [e-mail] ^[1]; Kosenko, G. I., E-mail: [e-mail] ^[2]; Ivanyuk, F. A., E-mail: [e-mail] ^[3]; Pashkevich, V. V., E-mail: [e-mail] ^[1]

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1. Joint Institute for Nuclear Research, Laboratory of Theoretical Physics (Russian Federation)
2. Omsk State University (Russian Federation)
3. National Academy of Sciences of Ukraine, Institute of Nuclear Research (Ukraine)

The effect of the shell structure of colliding nuclei in calculating the entrance channel on the ensuing evolution of the product system is investigated. The entrance channel is calculated under the assumption of the nose-to-nose orientation of colliding nuclei. The following three reactions involving nuclei that are deformed in the ground state are considered: {sub 42}{sup 100}Mo + {sub 42}{sup 100}Mo {yields} {sub 84}{sup 100}Po, {sub 42}{sup 100}Mo + {sub 46}{sup 100}Pd {yields} {sub 88}{sup 210}Ra, and {sub 46}{sup 110}Pd + {sub 46}{sup 110}Pd {yields} {sub 92}{sup 220}U. The state of the system at the point of touching is determined by the results obtained by calculating the entrance reaction channel. The shape of the system is specified by three collective coordinates (deformation parameters). The evolution of collective coordinates of the system is described in terms of Langevin equations. The potential energy of the system of colliding nuclei is calculated with allowance for their shell structure. It is shown that allowance for individual features of interacting nuclei in the entrance channel of the fusion-fission reactions makes it possible to obtain, for the reactions being considered, cross sections for evaporation-residue formation that are closer to available experimental data than their liquid-drop counterparts.

• OSTI ID: 22043805
• Journal Information: Physics of Atomic Nuclei, Vol. 75, Issue 1; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
EVAPORATION MODEL
FISSION
GROUND STATES
LANGEVIN EQUATION
LIQUID DROP MODEL
MOLYBDENUM 100 REACTIONS
MOLYBDENUM 100 TARGET
NUCLEAR STRUCTURE
PALLADIUM 100
PALLADIUM 110 REACTIONS
PALLADIUM 110 TARGET
POLONIUM 200
POTENTIAL ENERGY
SHELL MODELS
URANIUM 220