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Jagiełło, Jakub, 2026, "Raw data for the article: Dosimetric platform and a genuine Raman protocol for passive estimation of fast-neutron fluence in irradiated SiC and SiC topped with epitaxial graphene", https://doi.org/10.18150/QHUNZ7, RepOD, V1
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Averaged Raman spectra of SiC after irradiation with fast neutrons at fluences of: 1.9E17cm-2, 2.1E18 cm-2, 4.1E18 cm-2 and 6.5E18 cm-2. Raman maps for each sample were made in two locations: in the graphene mesa area and outside it.
Abstract of the related publication:
The article introduces a genuine ex-situ measurement protocol to estimate the integrated flux of mostly fast (1-2 MeV) neutrons. It is verified up to the fluence of 6.5 × 1018 n/cm2. A dedicated dosimetric platform comprises p-type hydrogen-intercalated quasi-free-standing epitaxial Chemical Vapor Deposition graphene on semi-insulating vanadium-compensated nominally on-axis 6H-SiC(0001) and a 100-nm-thick atomic-layer-deposited amorphous aluminum oxide encapsulation. The methodology correlates the total area under the averaged Raman spectra of SiC, between 60 cm-1 and 1200 cm-1, upon prior normalization to the maximum value of the longitudinal optical mode at 964 cm-1. The patterned a-Al2O3/QFS-graphene/6H-SiC(0001) system offers two verification mechanisms — one within the graphene mesa and the other outside. Following the protocol, one can read the neutron fingerprint in the material and relate it to the integrated flux. The passive character of the method eliminates the radiological hazards associated with traditional activation methods. The approach enables localized and precise fluence control in fissile and thermonuclear facilities with a Root Mean Squared Percentage Error of the fitted model of approximately 4%.
Raman spectroscopy, Integrated flux, Fast-neutron dosimetry, Silicon carbide, Epitaxial graphene, Clean energy
Jakub Jagiełło, Artur Dobrowolski, Tymoteusz Ciuk, Rafał Prokopowicz, Barbara Bieńkowska, Jakub Włodarczyk, Semir El-Ahmar, Maciej J. Szary, Mirosław Szybowicz, Dosimetric platform and a genuine Raman protocol for passive estimation of fast-neutron fluence in irradiated SiC and SiC topped with epitaxial graphene, Results in Physics, Volume 75, 2025, 108332, ISSN 2211-3797. https://www.sciencedirect.com/science/article/pii/S2211379725002268 doi: 10.1016/j.rinp.2025.108332.
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