Isotopic dependence of the cross section for the induced fission of heavy nuclei

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778809060040· OSTI ID:21405907

Bolgova, O N; Adamian, G G; Antonenko, N V; Zubov, A S; Ivanova, S P ^[1]; Scheid, W ^[2]

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1. Joint Institute for Nuclear Research (Russian Federation)
2. Justus-Liebig-Universitaet, Institut fuer Theoretische Physik (Germany)

The cross sections for the induced fission of {sup 211-223}Ra, {sup 203-211}Rn, and {sup 221-231}Th nuclei undergoing peripheral collisions with {sup 208}Pb nuclei are calculated on the basis of the statistical model. The role of the N = 126 neutron shell is studied. The level density in excited nuclei is determined within the Fermi gas model and a model that takes into account the collective enhancement of the level density. The inclusion of a particle-hole excitation in addition to a collective Coulomb excitation makes it possible to obtain a satisfactory description of experimental cross sections for the fission of radium isotopes. The calculated ratios of the cross sections for the induced fission of {sup 236}U ({sup 237}U) and {sup 238}U ({sup 239}U) nuclei agree with experimental data.

• OSTI ID: 21405907
• Journal Information: Physics of Atomic Nuclei, Vol. 72, Issue 6; Other Information: DOI: 10.1134/S1063778809060040; Copyright (c) 2009 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB EXCITATION
CROSS SECTIONS
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FERMI GAS MODEL
FISSION
LEAD 208
NEUTRONS
PERIPHERAL COLLISIONS
RADIUM 211
RADIUM 223
RADON 203
RADON 211
STATISTICAL MODELS
THORIUM 221
THORIUM 231
URANIUM 236
URANIUM 237
URANIUM 238
URANIUM 239
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARYONS
BASIC INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 14 DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITATION
FERMIONS
HADRONS
HEAVY ION DECAY RADIOISOTOPES
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERACTIONS
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD ISOTOPES
MATHEMATICAL MODELS
MILLISECONDS LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
NANOSECONDS LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
RADIOISOTOPES
RADIUM ISOTOPES
RADON ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
STABLE ISOTOPES
STRONG INTERACTIONS
THORIUM ISOTOPES
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES