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Volume 25
Issue 18
10.3390/s25185865
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV–10 MeV Energy Range

by
Margherita Simoni
1,
Leonardo Baldassarre
2,
Carlo Cazzaniga
3,
Laura Fazi
1,
Mattia Gaboardi
1,*,
Leandro Gemmiti
2,
Maria Kastriotou
3,
Matthew Krzystyniak
3,
Anna Marsicano
3,
Marco Martellucci
4,
Triestino Minniti
1,
Anna Prioriello
1,
Roberto Senesi
1,5,
Valentin Suteica
1 and
Giovanni Romanelli
1,3
1
Dipartimento di Fisica and NAST Centre, Università degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy
2
L.B. Servizi per le Aziende srl, Via Gabriele Paleotti 43, 00168 Roma, Italy
3
ISIS Neutron and Muon Source, UKRI-STFC, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, UK
4
Mardel Srl, Via Topino 35, 00199 Roma, Italy
5
Istituto di Struttura della Materia (ISM), Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
*
Author to whom correspondence should be addressed.
Sensors 2025, 25(18), 5865; https://doi.org/10.3390/s25185865
Submission received: 6 August 2025 / Revised: 11 September 2025 / Accepted: 16 September 2025 / Published: 19 September 2025
(This article belongs to the Section Physical Sensors)
Versions Notes

Abstract

We provide a beam shape characterization of the VESUVIO spectrometer, at the ISIS Neutron and Muon Source, employing CR-39 solid-state nuclear track detectors and combining techniques including optical and electron microscopy, as well as Monte Carlo transport simulations. In particular, we show, through comparison with irradiation with 14 MeV neutrons at the NILE Facility at ISIS, that the majority of defects on the etched surface of the dosimeters irradiated on VESUVIO were induced by neutrons with energies between 100 keV and 10 MeV. Our results were compared to previous characterizations of the VESUVIO beam shape performed in either the thermal or fast energy ranges, and we conclude that the VESUVIO beam has a constant shape from thermal-neutron energies up to 10 MeV, composed of an umbra (intensity above 90% of the maximum) with radius 1.1 cm, and surrounded by a penumbra (intensity above 1% of the maximum) that extends up to 2.5 cm.
Keywords: CR-39; solid-state nuclear track detectors; neutron beam profile CR-39; solid-state nuclear track detectors; neutron beam profile

Share and Cite

MDPI and ACS Style

Simoni, M.; Baldassarre, L.; Cazzaniga, C.; Fazi, L.; Gaboardi, M.; Gemmiti, L.; Kastriotou, M.; Krzystyniak, M.; Marsicano, A.; Martellucci, M.; et al. Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV–10 MeV Energy Range. Sensors 2025, 25, 5865. https://doi.org/10.3390/s25185865

AMA Style

Simoni M, Baldassarre L, Cazzaniga C, Fazi L, Gaboardi M, Gemmiti L, Kastriotou M, Krzystyniak M, Marsicano A, Martellucci M, et al. Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV–10 MeV Energy Range. Sensors. 2025; 25(18):5865. https://doi.org/10.3390/s25185865

Chicago/Turabian Style

Simoni, Margherita, Leonardo Baldassarre, Carlo Cazzaniga, Laura Fazi, Mattia Gaboardi, Leandro Gemmiti, Maria Kastriotou, Matthew Krzystyniak, Anna Marsicano, Marco Martellucci, and et al. 2025. "Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV–10 MeV Energy Range" Sensors 25, no. 18: 5865. https://doi.org/10.3390/s25185865

APA Style

Simoni, M., Baldassarre, L., Cazzaniga, C., Fazi, L., Gaboardi, M., Gemmiti, L., Kastriotou, M., Krzystyniak, M., Marsicano, A., Martellucci, M., Minniti, T., Prioriello, A., Senesi, R., Suteica, V., & Romanelli, G. (2025). Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV–10 MeV Energy Range. Sensors, 25(18), 5865. https://doi.org/10.3390/s25185865

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