Measurement of Y-89(n,2n) spectral averaged cross section in LR-0 special core reactor spectrum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F17%3AN0000031" target="_blank" >RIV/26722445:_____/17:N0000031 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.radphyschem.2017.05.027" target="_blank" >http://dx.doi.org/10.1016/j.radphyschem.2017.05.027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radphyschem.2017.05.027" target="_blank" >10.1016/j.radphyschem.2017.05.027</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of Y-89(n,2n) spectral averaged cross section in LR-0 special core reactor spectrum

Popis výsledku v původním jazyce

The present paper describes reaction rate measurement of Y-89(n,2n)Y-88 in a well-defined reactor spectrum of a special core assembled in the LR-0 reactor and compares this value with results of simulation. The reaction rate is derived from the measurement of activity of Y-88 using gamma-ray spectrometry of irradiated Y2O3 sample. The resulting cross section value averaged in spectrum is 43.9 +/- 1.5 mu b, averaged in the U-235 spectrum is 0.172 +/- 0.006 mb. This cross-section is important as it is used as high energy neutron monitor and is therefore included in the International Reactor Dosimetry and Fusion File. Calculations of reaction rates were performed with the MCNP6 code using ENDF/B-VILO, JEFF-3.1, JEFF-3.2, JENDL-3.3, JENDL-4, ROSFOND-2010, CENDL-3.1 and IRDFF nuclear data libraries. The agreement with uranium description by CIELO library is very good, while in ENDF/B-VILO description of uranium, underprediction about 10% in average can be observed.

Název v anglickém jazyce

Measurement of Y-89(n,2n) spectral averaged cross section in LR-0 special core reactor spectrum

Popis výsledku anglicky

The present paper describes reaction rate measurement of Y-89(n,2n)Y-88 in a well-defined reactor spectrum of a special core assembled in the LR-0 reactor and compares this value with results of simulation. The reaction rate is derived from the measurement of activity of Y-88 using gamma-ray spectrometry of irradiated Y2O3 sample. The resulting cross section value averaged in spectrum is 43.9 +/- 1.5 mu b, averaged in the U-235 spectrum is 0.172 +/- 0.006 mb. This cross-section is important as it is used as high energy neutron monitor and is therefore included in the International Reactor Dosimetry and Fusion File. Calculations of reaction rates were performed with the MCNP6 code using ENDF/B-VILO, JEFF-3.1, JEFF-3.2, JENDL-3.3, JENDL-4, ROSFOND-2010, CENDL-3.1 and IRDFF nuclear data libraries. The agreement with uranium description by CIELO library is very good, while in ENDF/B-VILO description of uranium, underprediction about 10% in average can be observed.

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)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Radiation Physics and Chemistry

ISSN

0969-806X

e-ISSN

—

Svazek periodika

141

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

22-28

Kód UT WoS článku

000412607700004

EID výsledku v databázi Scopus

2-s2.0-85020460961