Validation of Nuclear Data Using Broomstick Experiments in VR-1 Reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000153" target="_blank" >RIV/26722445:_____/24:N0000153 - isvavai.cz</a>

Result on the web

<a href="https://www.ans.org/pubs/proceedings/article-57226/" target="_blank" >https://www.ans.org/pubs/proceedings/article-57226/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Validation of Nuclear Data Using Broomstick Experiments in VR-1 Reactor

Original language description

The broomstick experiment is a special type of integral experiment excellent for validation of cross sections as it is highly sensitive to total cross section and its components [1]. The main goal of this work is to develop a narrow neutron beam with low divergence, place blocks (cylinders) of studied material (broomsticks) into this beam and measure the neutron leakage behind the inserted material. This type of experiment is an excellent complement to 4π experiments, which involve inserting a point neutron source into the center of the well-defined and very large material block [2]. The reason is that the sensitivities in the broomstick experiments differ from those in the 4π experiments. Specifically, in broomstick experiments, the sensitivities to all cross sections are negative (see Fig. 1). Thus, any cross-section increase leads to decrease in transmitted flux. In contrast, in 4π experiments, inelastic scattering has a negative sensitivity, but elastic scattering has a positive sensitivity (see Fig. 2). Additionally, broomstick experiments are highly sensitive to the total cross section, while the 4π experiments show larger sensitivity to the inelastic cross section. Broomstick experiments also require a significantly smaller amount of the tested material than 4π experiments. The combination of these sensitivities allows the precise evaluation and identification of possible imperfections in partial cross sections. Presented at RPSD 2024+2024 ANS Winter Conference and Expo Nov 17-21, 2024.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

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Continuities

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Publication year

2024

Confidentiality

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

Article name in the collection

Proceedings Radiation Protection and Shielding Division 2024 (RPSD 2024), Orlando, FL, November 17-21, 2024

ISBN

9798331311124

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

220-223

Publisher name

ANS

Place of publication

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Event location

Orlando, USA

Event date

Nov 17, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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