Enhancement of the polydimethylsiloxane (PDMS) luminescence to develop a proton scintillator

0562435 - ÚJF 2023 RIV NL eng J - Článek v odborném periodiku
Torrisi, L. - Silipigni, L. - Torrisi, A. - Havránek, Vladimír - Cutroneo, Mariapompea
Enhancement of the polydimethylsiloxane (PDMS) luminescence to develop a proton scintillator.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 1039, SEP (2022), č. článku 167012. ISSN 0168-9002. E-ISSN 1872-9576
Grant CEP: GA ČR GA19-02482S; GA MŠMT EF16_013/0001812
Výzkumná infrastruktura: CANAM II - 90056
Institucionální podpora: RVO:61389005
Klíčová slova: Polydimethylsiloxane * Au-nanoparticles * Graphene oxide microparticles * Luminescence * Scintillator * Proton irradiation
Obor OECD: Nuclear physics
Impakt faktor: 1.4, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.nima.2022.167012

The polydimethylsiloxane (PDMS) luminescence, induced by MeV proton beams, has been investigated in the pure and doped polymer. Gold nanoparticles (AuNPs) and graphene oxide microparticles (GO mu Ps) have been employed at low concentration (0.1 wt%) to modify the PDMS properties. Measurements have demonstrated that AuNPs enhance the PDMS luminescence, while GO mu Ps quench the polymer luminescence. The first ones, embedded into PDMS, produce a visible luminescence whose intensity is proportional to the absorbed proton dose. A linearity between the luminescence intensity and the proton absorbed dose is observed up to about 2.5 kGy, while at higher doses a luminescence saturation region shows up. The polymer can be employed to monitor in vacuum the proton beam spot size and shape and as a plastic scintillator dosimeter with peculiar elastic properties and high biocompatibility, as it will be presented and discussed.
Trvalý link: https://hdl.handle.net/11104/0334752