Application of 252Cf neutron source for precise nuclear data experiments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F19%3AN0000037" target="_blank" >RIV/26722445:_____/19:N0000037 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0969804319301307" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0969804319301307</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apradiso.2019.06.012" target="_blank" >10.1016/j.apradiso.2019.06.012</a>
Alternative languages
Result language
angličtina
Original language name
Application of 252Cf neutron source for precise nuclear data experiments
Original language description
Purpose of this paper is to provide extensive information helpful for anyone performing any experiment involving Cf-252 neutron source and aiming for high precision experiments. The paper summarizes basic characteristics and fields of study using Cf-252 neutron source. We show the basic characteristics of our source, precise geometry in MCNP6, isotopic content, distribution of the source in the encapsulation and possible use of encapsulation for Al-27(n,2n)Al-26 reaction estimation and the way of handling of the Cf-252 neutron source in our laboratory. Furthermore, we prove that our source is volumetric, i.e. non-point and can be considered as an isotropic in our experimental settings. Influence of the palladium matrix density on the reaction rates is also investigated. Concerning nuclear data, we are measuring fast neutron leakage spectra in various benchmark sets including spheres of different materials. Our work extends benchmark sets to possible use of cubes, in our case graphite cube of side 30 cm. The neutron spectra are measured by stilbene scintilation detector in the energy range of 1-10 MeV in the steps of 100 keV in the distance of 100 cm from the centre of the cube. There is no significant difference between measurements performed using cube or sphere except lower cost for the cube production. The agreement between calculation using ENDF/B-VII.1 library and experimental data is not satisfactory especially in the regions around 3.5 MeV and 8 MeV. The agreement within 4% of calculation to experiment ratio for neutron leakage fluxes of pure Cf-252 source validates our MCNP model for studying reaction rates and leakage fluxes in the region above 1 MeV.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Radiation and Isotopes
ISSN
0969-8043
e-ISSN
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Volume of the periodical
151
Issue of the periodical within the volume
September
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
187-195
UT code for WoS article
000482244900028
EID of the result in the Scopus database
2-s2.0-85067078620