Delayed neutron counting of uranium pins using moderated neutrons from portable DD neutron generator in high frequency mode

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00360659" target="_blank" >RIV/68407700:21340/23:00360659 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.apradiso.2022.110527" target="_blank" >https://doi.org/10.1016/j.apradiso.2022.110527</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apradiso.2022.110527" target="_blank" >10.1016/j.apradiso.2022.110527</a>

Result language

angličtina

Original language name

Delayed neutron counting of uranium pins using moderated neutrons from portable DD neutron generator in high frequency mode

Original language description

Delayed neutron counting is often used to verify the characteristics of nuclear material. Use of portable neutron generators in high frequency pulsing mode enables effective analysis with higher counting efficiency and lower radiation protection demands. The paper deals with delayed neutron counting of uranium pins with P385 portable DD neutron generator in polyethylene-based setup. Counting is performed in high frequency mode of neutron generator. The viability of such measurement in the frequency range from 100 Hz to 250 Hz was demonstrated and optimal pulsing parameters for P385 neutron generator were found. Delayed neutron counting was then performed for two types of uranium rods. Delayed neutrons were counted both inbetween neutron pulses during neutron generation and once the emission of neutrons stopped. The results were further validated by Monte Carlo (MCNP) simulations. For the geometry of studied rods, the MCNP calculation were done to calculate the dependence of the response to delayed neutrons on rod enrichment, to show the viability to use the method for rod enrichment verification. An option of using cadmium inset in irradiation channel to overcome the effect of self-shielding for samples with higher enrichment was proposed, experimentally tested, and evaluated through MCNP calculations.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

<a href="/en/project/VI20192022171" target="_blank" >VI20192022171: Utilisation of radiation based methods for detection and identification of CBRNE materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Applied Radiation and Isotopes

ISSN

0969-8043

e-ISSN

1872-9800

Volume of the periodical

191

Issue of the periodical within the volume

110527

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

000894089100004

EID of the result in the Scopus database

2-s2.0-85140467309