Transmutation efficiency of the spallation neutron target measured with the actinide sandwiches

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00539470" target="_blank" >RIV/61389005:_____/21:00539470 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26220/21:PU141417

Výsledek na webu

<a href="https://doi.org/10.1016/j.nima.2020.164934" target="_blank" >https://doi.org/10.1016/j.nima.2020.164934</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2020.164934" target="_blank" >10.1016/j.nima.2020.164934</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Transmutation efficiency of the spallation neutron target measured with the actinide sandwiches

Popis výsledku v původním jazyce

We used actinide sandwiches composed of U-233, U-235, U-236, U-238, Np-237, Pu-238, and Pu-239 isotopes to study the transmutation efficiency of the natural uranium spallation target Quinta bombarded with 660-MeV protons. The efficiency, defined as a ratio of fission to production, was determined by measuring simultaneously the production of transuranium isotopes via the (n,gamma) and (n,xn) reactions, and fission incineration of their reaction products. For example, with the U-238-Pu-239 sandwich, measured was the production of Pu-239 from U-238 via the (n,gamma) reaction, as well as Pu-239 transmutation via fission. The efficiencies were measured using gamma spectroscopy. All the measured efficiencies were greater than 1.0, which demonstrates that the fast neutron spectrum at Quinta is highly suitable for actinide transmutation. Experimental results were compared with computer simulations employing the latest versions of the MCNP6 code and ENDF/B-VIII and JENDL/HE data libraries. A good agreement within one standard deviation was reached, which validates the utilized computation suite and shows that the suite is well capable of performing neutronic simulations related to actinide transmutation, spallation neutron sources and accelerator-driven systems.

Název v anglickém jazyce

Transmutation efficiency of the spallation neutron target measured with the actinide sandwiches

Popis výsledku anglicky

We used actinide sandwiches composed of U-233, U-235, U-236, U-238, Np-237, Pu-238, and Pu-239 isotopes to study the transmutation efficiency of the natural uranium spallation target Quinta bombarded with 660-MeV protons. The efficiency, defined as a ratio of fission to production, was determined by measuring simultaneously the production of transuranium isotopes via the (n,gamma) and (n,xn) reactions, and fission incineration of their reaction products. For example, with the U-238-Pu-239 sandwich, measured was the production of Pu-239 from U-238 via the (n,gamma) reaction, as well as Pu-239 transmutation via fission. The efficiencies were measured using gamma spectroscopy. All the measured efficiencies were greater than 1.0, which demonstrates that the fast neutron spectrum at Quinta is highly suitable for actinide transmutation. Experimental results were compared with computer simulations employing the latest versions of the MCNP6 code and ENDF/B-VIII and JENDL/HE data libraries. A good agreement within one standard deviation was reached, which validates the utilized computation suite and shows that the suite is well capable of performing neutronic simulations related to actinide transmutation, spallation neutron sources and accelerator-driven systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Nuclear Instruments & Methods in Physics Research Section A

ISSN

0168-9002

e-ISSN

1872-9576

Svazek periodika

988

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

164934

Kód UT WoS článku

000604627500017

EID výsledku v databázi Scopus

2-s2.0-85097580145