Sensitivity of the Lumped Fission-Product Model to Different Fission-Product Cross-Section Libraries

Autor:	D. Saphier, D. Ilberg, S. Yiftah
Rok vydání:	1975
Předmět:	Nuclear physics Fission products Cross section (physics) Nuclear fission product Nuclear Energy and Engineering Isotope Mathematical model Nuclear data Sensitivity (control systems) Mathematics Burnup
Zdroj:	Nuclear Science and Engineering. 58:445-449
ISSN:	1943-748X 0029-5639
DOI:	10.13182/nse75-a26800
Popis:	The extent to which the use of different fission-product cross sections (FPCS) affects the neutron multiplication factor k/sub eff/ in high burnup cores of fast reactors is evaluated. It is found that discrepancies of the order of 2.5 percent exist when different FPCS are used to calculate k/sub eff/ in the same core. These discrepancies are due to the absence of data on a number of fission-product isotopes present in some of the nuclear data libraries on the one hand, and large differences in the capture cross sections of some of the isotopes on the other. A list of fission-product isotopes is proposed that, when used, reduces discrepancies in k/sub eff/ to less than 1 percent. The important isotopes for fast-reactor burnup and k/ sub eff/ calculations in which large discrepancies exist are identified, and it is suggested that they be subjected to further evaluation to close the discrepancy gap. (auth)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b1331582be52023478fb7b6a6c7cb301 https://doi.org/10.13182/nse75-a26800 Zobrazit plný text záznamu