Proton beam dosimetry based on the graphene oxide reduction and Raman spectroscopy

0561550 - ÚJF 2023 RIV GB eng J - Journal Article
Torrisi, L. - Cutroneo, Mariapompea - Manno, D. - Serra, A. - Torrisi, A. - Silipigni, L.
Proton beam dosimetry based on the graphene oxide reduction and Raman spectroscopy.
Vacuum. Roč. 201, JUL (2022), č. článku 111113. ISSN 0042-207X. E-ISSN 1879-2715
R&D Projects: GA MŠMT EF16_013/0001812
Research Infrastructure: CANAM II - 90056
Institutional support: RVO:61389005
Keywords : Graphene oxide * Reduced graphene oxide * Ion dosimeter * Proton beam * Ion fluence * Electron stopping power
OECD category: Nuclear physics
Impact factor: 4, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.vacuum.2022.111113

mu Raman spectra of graphene oxide (GO) and reduced graphene oxide (rGO) foils, subjected to 2 divided by 3 MeV proton beam irradiations in vacuum at low and high fluence, have been investigated. The spectra detailed analysis indicates that the characteristic D and G peaks yields ratio, the area of the D''peak, located between D and G, the G peak full width at half maximum, the C-H band area and full width at half maximum are functions of the absorbed dose. The D and the D'' peaks presence is indicative of the disorder generated in the target by the ion beam. All these observations suggest some useful indexes to read the proton absorbed dose by the irradiated rGO foils. Therefore, these GO based foils can be employed as dosimeters for proton beams in a large range of absorbed dose, from about 100 Gy up to about 114 MGy, within which Raman signals respond linearly.
Permanent Link: https://hdl.handle.net/11104/0334137