One-Group Cross-Sections of High-Threshold Reactions for Precision Neutronics Calculations

Low-concentration nuclides – impurity nuclides – are increasingly in demand in radiochemistry for defining more precisely the neutronic characteristics of the medium. On use in precision calculations, impurity nuclides afford more accurate calculations. This article considers aspects of the calculat...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2023-02, Vol.133 (4), p.228-232
Main Authors: Mitenkova, E. F., Novikov, N. V., Solovjeva, E. V.
Format: Article
Language:English
Subjects:
Accuracy
Composition
Cross-sections
Energy
Hadrons
Heavy Ions
Impurities
Libraries
Mathematical analysis
Nuclear Chemistry
Nuclear Energy
Nuclear Physics
Nuclear reactors
Nuclides
Physics
Physics and Astronomy
Radiochemistry
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Summary:Low-concentration nuclides – impurity nuclides – are increasingly in demand in radiochemistry for defining more precisely the neutronic characteristics of the medium. On use in precision calculations, impurity nuclides afford more accurate calculations. This article considers aspects of the calculation of one-group cross sections of the high-threshold reactions ( n , nt ), ( n , 2 α ), ( n , 2 p ), ( n , pα ), ( n , nd ), ( n , np ), ( n , 2 nα ), and others in extended libraries and their influence on the nuclide composition of irradiated compositions in calculations using the MZK precision program. This program affords guaranteed accuracy of calculated nuclides, including impurities. A procedure is proposed for calculating one-group cross sections as applied to the spectrum in fast reactors.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-023-01001-7