Measurement and analysis of the 241Am neutron capture cross section at the n_TOF facility at CERN

Znanstveni rad - Izvorni znanstveni rad

• Autor: E. Mendoza
• Autor: ...
• Autor: Damir Bosnar; MBZ: 134936
• Autor: ...
• Autor: Petar Žugec; MBZ: 326085
• Kolaboracija: n_TOF Collaboration
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The 241Am(n, γ) cross section has been measured at the n_TOF facility at CERN with the n_TOF BaF2 Total Absorption Calorimeter in the energy range between 0.2 eV and 10 keV. Our results are analyzed as resolved resonances up to 700 eV, allowing a more detailed description of the cross section than in the current evaluations, which contain resolved resonances only up to 150–160 eV. The cross section in the unresolved resonance region is perfectly consistent with the predictions based on the average resonance parameters deduced from the resolved resonances, thus obtaining a consistent description of the cross section in the full neutron energy range under study. Below 20 eV, our results are in reasonable agreement with JEFF-3.2 as well as with the most recent direct measurements of the resonance integral, and differ up to 20–30% with other experimental data. Between 20 eV and 1 keV, the disagreement with other experimental data and evaluations gradually decreases, in general, with the neutron energy. Above 1 keV, we find compatible results with previously existing values.

• Ključne riječi (engleski): 241Am; neutron capture; n_TOF; Total Absorption Calorimeter
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C
• Brojčani podaci: vol. 97, br. 5, 054616
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.97.054616
• URN:NBN: urn:nbn:hr:217:419417
• Datum objave publikacije: 2018
• URL dokumenta: https://journals.aps.org/prc/abstract/10.1103/PhysRevC.97.054616
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2018 American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 31 January 2018; published 24 May 2018.
• Datum i vrijeme pohrane: 2020-03-01 17:08:33