Measurement of the High Energy Gamma Spectrum Up to 13 MeV in the Special Core of the LR-0 Reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000135" target="_blank" >RIV/26722445:_____/24:N0000135 - isvavai.cz</a>

Result on the web

<a href="https://www.ans.org/pubs/proceedings/article-55503/" target="_blank" >https://www.ans.org/pubs/proceedings/article-55503/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13182/PHYSOR24-43553" target="_blank" >10.13182/PHYSOR24-43553</a>

Result language

angličtina

Original language name

Measurement of the High Energy Gamma Spectrum Up to 13 MeV in the Special Core of the LR-0 Reactor

Original language description

The reactor gamma spectrum is formed by superposition of various emission sources, which are mainly discrete gammas from thermal capture and inelastic reactions on fuel, water and structural reactor materials and continuous prompt fission gamma spectrum (PFGS) of fissile materials present in fuel, namely 235U and 238U. The inelastic and capture gammas accompanying neutron interactions with structural components have energies below 10 MeV. Thus, the spectrum above 10 MeV is formed by fission gammas. It means, that above 10 MeV the gamma spectrum in the special core is expected to be nearly identical with evaluated 235U(nth., fiss) PFGS, as 235U fission is causing more than 95 % of fissions and shape of prompt fission gamma spectrum of 235U(nth., f) and 238U(n,f) are comparable. It is worth noting that in the special core the neutron spectrum above 6 MeV is nearly identical with the 235U(n_th., f) prompt fission neutron spectrum and the gamma spectrum above 10 MeV is nearly identical with the 235U(nth., f) PFGS. The measurement was performed using a stilbene spectrometer 45 mm × 45 mm and newly developed and well-validated gamma response matrix.

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

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

<a href="/en/project/LM2023041" target="_blank" >LM2023041: Czech International Centre of Research Reactors</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Article name in the collection

International Conference on Physics of Reactors (PHYSOR 2024)

ISBN

979-8-3313-0130-9

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

306-313

Publisher name

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Place of publication

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Event location

San Francisco, USA

Event date

Apr 21, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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