prikaz prve stranice dokumenta Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF
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Scientific paper - Original scientific paper
Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF
European Physical Journal A: Hadrons and Nuclei, 55 (2019), 7; 120. https://doi.org/10.1140/epja/i2019-12802-7
(n_TOF Collaboration) Amaducci, S.; ...; Bosnar, Damir; ...; Žugec, Petar

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Amaducci, S., Bosnar, D. & Žugec, P. (2019). Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF. European Physical Journal A: Hadrons and Nuclei, 55. (7). doi: 10.1140/epja/i2019-12802-7

Amaducci, S., et al. "Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF." European Physical Journal A: Hadrons and Nuclei, vol. 55, no. 7, 2019. https://doi.org/10.1140/epja/i2019-12802-7

Amaducci, S., Damir Bosnar and Petar Žugec. "Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF." European Physical Journal A: Hadrons and Nuclei 55, no. 7 (2019). https://doi.org/10.1140/epja/i2019-12802-7

Amaducci, S., Bosnar, D. and Žugec, P. (2019) 'Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF', European Physical Journal A: Hadrons and Nuclei, 55(7). doi: 10.1140/epja/i2019-12802-7

Amaducci S, Bosnar D, Žugec P. Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF. European Physical Journal A: Hadrons and Nuclei [Internet]. 2019 [cited 2024 November 20];55(7). doi: 10.1140/epja/i2019-12802-7

S. Amaducci, D. Bosnar and P. Žugec, "Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF", European Physical Journal A: Hadrons and Nuclei, vol. 55, no. 7, 2019. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:490728. [Accessed: 20 November 2024]

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Title (english)Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, α) standards from thermal to 170 keV neutron energy range at n_TOF
AuthorS. Amaducci
Author
...
AuthorDamir Bosnar
MBZ: 134936
Author
...
AuthorPetar Žugec
MBZ: 326085
Collaborationn_TOF Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The 235U(n, f) cross section was measured at n_TOF relative to 6Li(n, t) and 10B(n, α), with high resolution (L = 183.49(2)m) and in a wide energy range (25meV–170 keV) with 1.5% systematic uncertainty, making use of a stack of six samples and six silicon detectors placed in the neutron beam. This allowed us to make a direct comparison of the yields of the 235U(n, f) and of the two reference reactions under the same experimental conditions, and taking into account the forward/backward emission asymmetry. A hint of an anomaly in the 10–30 keV neutron energy range had been previously observed in other experiments, indicating a cross section systematically lower by several percent relative to major evaluations. The present results indicate that the cross section in the 9–18 keV neutron energy range is indeed overestimated by almost 5% in the recently released evaluated data files ENDF/B-VIII.0 and JEFF3.3, as a consequence of a 7% overestimate in a single GMA node in the IAEA reference file. Furthermore, these new high-resolution data confirm the existence of resonance-like structures in the keV neutron energy region. The results here reported may lead to a reduction of the uncertainty in the 1–100 keV neutron energy region. Finally, from the present data, a value of 249.7±1.4(stat)±0.94(syst) b·eV has been extracted for the cross section integral between 7.8 and 11 eV, confirming the value of 247.5±3 b·eV recently established as a standard.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleEuropean Physical Journal A: Hadrons and Nuclei
Numberingvol. 55, no. 7, 120
p-ISSN1434-6001
e-ISSN1434-601X
DOIhttps://doi.org/10.1140/epja/i2019-12802-7
URN:NBNurn:nbn:hr:217:490728
Publication2019
ProjectNumber: IP-2018-01-8570
Title (croatian): Elektroni, kaoni i neutroni u preciznim mjerenjima svojstava hadrona i jezgara
Acronym: EKNpEXP
Leader: Damir Bosnar
Jurisdiction: Croatia
Funding stream: IP
Document URLhttps://link.springer.com/article/10.1140/epja/i2019-12802-7
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© The Author(s) 2019. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Received: 21 March 2019. Revised: 30 May 2019. Published online: 26 July 2019.
Created on2020-08-18 10:51:13