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Record |
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Author  |
n_TOF Collaboration (Martinez-Cañadas, M.A. et al); Torres-Sanchez, P.; Babiano-Suarez, V.; Caballero, L.; Domingo-Pardo, C.; Ladarescu, I.; Tain, J.L. |
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Title |
Measurement of the 35Cl(n, p)35S cross-section at the CERN n_TOF facility from subthermal energy to 120 keV |
Type |
Journal Article |
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Year |
2026 |
Publication |
European Physical Journal A |
Abbreviated Journal |
Eur. Phys. J. A |
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Volume |
62 |
Issue |
5 |
Pages |
90 - 15pp |
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Abstract |
The Cl-35(n, p)S-35 reaction plays a key role in neutron dosimetry for Boron Neutron Capture Therapy, in the synthesis of the isotope S-36, whose astrophysical origin remains unresolved, and in the design of next-generation molten-salt reactors. Its relevance has motivated its inclusion in the High Priority Request List (HPRL) of NEA. The goal of this work is to determine the Cl-35(n, p)S-35 cross-section from thermal energy to 120 keV for the first time ever in a single measurement, thus reducing systematic uncertainties related to the normalization to the thermal value. This had been a subject of concern in previous evaluations of this reaction. We made use of the Time-of-Flight technique with microMEGAS detectors at Experimental Area 2 (EAR-2) of n_TOF facility at CERN. The B-10 (n , alpha)Li-7 and U-235(n, f) reactions were used as references. Rutherford Back-scattering Spectrometry was performed at Centro Nacional de Aceleradores (CNA) in Sevilla, in order to accurately determine the masses of the irradiated samples. We obtained a thermal cross-section of 0.470 +/- 0.009 barns. The 1/v energy dependence of the cross-section is observed up to the first resonance at 0.398 keV, the resonances up to 120 keV are analyzed and resonance parameters extracted using SAMMY. Maxwellian Averaged Cross-Section (MACS) was calculated for k(B)T from 1 to 100 keV, and lower values compared to estimations from ENDF were found, e.g., 1.07 +/- 0.20 mb at k(B)T = 30 keV. The thermal cross-section and first two resonances are in agreement with the latest evaluation in ENDF/B-VIII.1, while remarkably lower resonance strengths were found for high energy resonances. |
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Address |
[Martinez-Canadas, Marco Antonio; Torres-Sanchez, Pablo; Praena, Javier; Porras, Ignacio; Ogallar, Francisco] Univ Granada, Granada, Spain, Email: Pablo.Torres@ific.uv.es |
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Thesis |
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Publisher |
Springer |
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Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6001 |
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Notes |
WOS:001761334300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7233 |
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