Comprehensive validation of fluorine cross-sections

J 2025

Comprehensive validation of fluorine cross-sections

CZAKOJ, Tomas; Michal KOSTAL; Evzen LOSA; Vojtech RYPAR; Evzen NOVAK et al.

Základní údaje

Originální název

Comprehensive validation of fluorine cross-sections

Autoři

CZAKOJ, Tomas; Michal KOSTAL; Evzen LOSA; Vojtech RYPAR; Evzen NOVAK; Martin SCHULC; Bohumil JANSKY; Jiri REJCHRT; Tomas PELTAN; Adam GRES a Zdeněk MATĚJ

Vydání

ANNALS OF NUCLEAR ENERGY, OXFORD, PERGAMON-ELSEVIER SCIENCE LTD, 2025, 0306-4549

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10300 1.3 Physical sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.300 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14330/25:00143693

Organizační jednotka

Fakulta informatiky

Klíčová slova anglicky

Neutron leakage flux; Neutron transport; Fluorine cross-section; 252Cf(s.f) neutron source; Scintillation spectrometer; Hydrogen proportional detector

Změněno: 2. 4. 2026 16:12, RNDr. Pavel Šmerk, Ph.D.

Anotace

V originále

The study utilized a PTFE block with a 252Cf neutron source to measure neutron leakage flux and reaction rate distribution. Hydrogen proportional detectors and stilbene scintillators were employed for spectrum measurement. The experimental setup included various activation foils to measure reaction rates, providing a detailed analysis of neutron interactions with fluorine. The results highlighted discrepancies between measured and calculated neutron spectra, emphasizing the need for continuous refinement of nuclear data libraries. The study compared several libraries, including ENDF/BVIII.0, JEFF-3.3, JENDL-5, and the INDEN fluorine evaluation. It was found that all libraries underpredict measured spectrum in lower energies. Namely below 1.9 MeV in the INDEN fluorine evaluation, below 4.8 MeV in JEFF-3.3 and ENDF/B-VIII.0. JENDL-5 is out of one sigma uncertainty for almost the whole tested energy range. Reaction rate measurements further validated the cross-sections, revealing significant discrepancies in the JENDL-5 library in lower energies. The findings underscore the importance of accurate cross-sections for reliable neutron transport simulations. The study advocates for the adoption of updated cross-sections in nuclear data libraries to enhance simulation accuracy.

Citovat

CZAKOJ, Tomas; Michal KOSTAL; Evzen LOSA; Vojtech RYPAR; Evzen NOVAK; Martin SCHULC; Bohumil JANSKY; Jiri REJCHRT; Tomas PELTAN; Adam GRES a Zdeněk MATĚJ. Comprehensive validation of fluorine cross-sections. ANNALS OF NUCLEAR ENERGY. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2025, roč. 218, č. 218, s. 1-8. ISSN 0306-4549. Dostupné z: https://doi.org/10.1016/j.anucene.2025.111426.

@article{2553987,
   author = {Czakoj, Tomas and Kostal, Michal and Losa, Evzen and Rypar, Vojtech and Novak, Evzen and Schulc, Martin and Jansky, Bohumil and Rejchrt, Jiri and Peltan, Tomas and Gres, Adam and Matěj, Zdeněk},
   article_location = {OXFORD},
   article_number = {218},
   doi = {https://doi.org/10.1016/j.anucene.2025.111426},
   keywords = {Neutron leakage flux; Neutron transport; Fluorine cross-section; 252Cf(s.f) neutron source; Scintillation spectrometer; Hydrogen proportional detector},
   language = {eng},
   issn = {0306-4549},
   journal = {ANNALS OF NUCLEAR ENERGY},
   title = {Comprehensive validation of fluorine cross-sections},
   url = {https://www.sciencedirect.com/science/article/abs/pii/S0306454925002439},
   volume = {218},
   year = {2025}
}

TY  - JOUR
ID  - 2553987
AU  - Czakoj, Tomas - Kostal, Michal - Losa, Evzen - Rypar, Vojtech - Novak, Evzen - Schulc, Martin - Jansky, Bohumil - Rejchrt, Jiri - Peltan, Tomas - Gres, Adam - Matěj, Zdeněk
PY  - 2025
TI  - Comprehensive validation of fluorine cross-sections
JF  - ANNALS OF NUCLEAR ENERGY
VL  - 218
IS  - 218
SP  - 1-8
EP  - 1-8
PB  - PERGAMON-ELSEVIER SCIENCE LTD
SN  - 03064549
KW  - Neutron leakage flux
KW  - Neutron transport
KW  - Fluorine cross-section
KW  - 252Cf(s.f) neutron source
KW  - Scintillation spectrometer
KW  - Hydrogen proportional detector
UR  - https://www.sciencedirect.com/science/article/abs/pii/S0306454925002439
N2  - The study utilized a PTFE block with a 252Cf neutron source to measure neutron leakage flux and reaction rate distribution. Hydrogen proportional detectors and stilbene scintillators were employed for spectrum measurement. The experimental setup included various activation foils to measure reaction rates, providing a detailed analysis of neutron interactions with fluorine. The results highlighted discrepancies between measured and calculated neutron spectra, emphasizing the need for continuous refinement of nuclear data libraries. The study compared several libraries, including ENDF/BVIII.0, JEFF-3.3, JENDL-5, and the INDEN fluorine evaluation. It was found that all libraries underpredict measured spectrum in lower energies. Namely below 1.9 MeV in the INDEN fluorine evaluation, below 4.8 MeV in JEFF-3.3 and ENDF/B-VIII.0. JENDL-5 is out of one sigma uncertainty for almost the whole tested energy range. Reaction rate measurements further validated the cross-sections, revealing significant discrepancies in the JENDL-5 library in lower energies. The findings underscore the importance of accurate cross-sections for reliable neutron transport simulations. The study advocates for the adoption of updated cross-sections in nuclear data libraries to enhance simulation accuracy.
ER  -

CZAKOJ, Tomas; Michal KOSTAL; Evzen LOSA; Vojtech RYPAR; Evzen NOVAK; Martin SCHULC; Bohumil JANSKY; Jiri REJCHRT; Tomas PELTAN; Adam GRES a Zdeněk MATĚJ. Comprehensive validation of fluorine cross-sections. \textit{ANNALS OF NUCLEAR ENERGY}. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2025, roč.~218, č.~218, s.~1-8. ISSN~0306-4549. Dostupné z: https://doi.org/10.1016/j.anucene.2025.111426.

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