Validation of differential cross sections by means of Cf-252 spectral averaged cross sections

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000004" target="_blank" >RIV/26722445:_____/18:N0000004 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0969804317309752" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0969804317309752</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apradiso.2017.11.008" target="_blank" >10.1016/j.apradiso.2017.11.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Validation of differential cross sections by means of Cf-252 spectral averaged cross sections

Popis výsledku v původním jazyce

The results of systematic evaluations of the spectrum-averaged cross section measurements performed in the spontaneous fission Cf-252 neutron field are presented. The Following threshold reactions were investigated: 23Na (n,2n)Na-22, Fe-54(n,p)Mn-84, "Fe(n,a) "Cr, Al-27(n,p)Mg-27, Al-27(n,alpha)Na-24, F-19(n,2n)F-18, Zr-90(n,2n)Zr-89 and Y-89 (n,2n)Y-88. The spectrum-averaged cross sections for Na-23(n,2n)Na-22, Fe-54(n,alpha)Cr-81 and Y-89(n,2n)Y-88 reactions were measured for the first time. This quantity is compared with calculations carried with the IRDFF-v1.05 library. There is a notable disagreement exceeding uncertainties only for Fe-54(n,p)Mn-84 and "Fe(n,a) "Cr reactions. The spectrum-averaged cross sections were inferred from experimentally determined reaction rates. The experimental reaction rates were derived for irradiated samples from the Net Peak Areas measured using the semiconductor high purity germanium spectroscopy. The presented experimental data can be used to validate nuclear data libraries and reactions used in the practical reactor dosimetry and to specify high energy tail of the Cf-252 neutron spectrum.

Název v anglickém jazyce

Validation of differential cross sections by means of Cf-252 spectral averaged cross sections

Popis výsledku anglicky

The results of systematic evaluations of the spectrum-averaged cross section measurements performed in the spontaneous fission Cf-252 neutron field are presented. The Following threshold reactions were investigated: 23Na (n,2n)Na-22, Fe-54(n,p)Mn-84, "Fe(n,a) "Cr, Al-27(n,p)Mg-27, Al-27(n,alpha)Na-24, F-19(n,2n)F-18, Zr-90(n,2n)Zr-89 and Y-89 (n,2n)Y-88. The spectrum-averaged cross sections for Na-23(n,2n)Na-22, Fe-54(n,alpha)Cr-81 and Y-89(n,2n)Y-88 reactions were measured for the first time. This quantity is compared with calculations carried with the IRDFF-v1.05 library. There is a notable disagreement exceeding uncertainties only for Fe-54(n,p)Mn-84 and "Fe(n,a) "Cr reactions. The spectrum-averaged cross sections were inferred from experimentally determined reaction rates. The experimental reaction rates were derived for irradiated samples from the Net Peak Areas measured using the semiconductor high purity germanium spectroscopy. The presented experimental data can be used to validate nuclear data libraries and reactions used in the practical reactor dosimetry and to specify high energy tail of the Cf-252 neutron spectrum.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Radiation and Isotopes

ISSN

0969-8043

e-ISSN

—

Svazek periodika

132

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

29-37

Kód UT WoS článku

000423642800006

EID výsledku v databázi Scopus

2-s2.0-85034058761