Radiation-induced chemical processes in polystyrene scintillators

Milinchuk, V.K.; Bol'bit, N.M.; Klinshpont, E.R.; Tupikov, V.I.; Zhdanov, G.S.; Taraban, S.B; Shelukhov, I. P.; Smoljanskii, A.S

doi:10.1016/s0168-583x(99)00096-8

Cited by 11 publications

(2 citation statements)

References 5 publications

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“…In PS-based plastic scintillators, the absorption of ionizing radiation occurs in the polymer medium and then the excitation is transferred to the activator molecules by nonradiative Forster dipole-dipole interactions [96]. PS is characterized by high radiation and heat resistance [97] whereby this polymer is suggested for use as a polymer matrix in nanocomposite materials [98], [99], [85], [86]. Figure 9 presents transmittance spectra of polystyrene (in air) and polyvinyl toluene (in argon) [92].…”

Section: Matrixmentioning

confidence: 99%

Ultrafast hybrid nanocomposite scintillators: A review

Shevelev

Ищенко

Ванецев

et al. 2022

Journal of Luminescence

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Section: Matrixmentioning

confidence: 99%

Ultrafast hybrid nanocomposite scintillators: A review

Shevelev

Ищенко

Ванецев

et al. 2022

Journal of Luminescence

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“…Thus, in order to develop flexible and stretchable materials able to convert X-ray radiation into visible radiation, with appropriate mechanical properties, showing thermally stability, chemical and radiation resistance and high energy resolution [18], this work reports on a novel composite based on gadolinium oxide doped with europium (Gd2O3:Eu 3+ ) and fluorescence molecules 2,5-dipheniloxazol (PPO) and 1,4-bis-(2-(5-phenioxazolil))-benzol (POPOP) able to efficiently convert X-ray radiation into visible light [19,20], dispersed into a thermoplastic elastomer polymer. Due to their atomic number, wide band gap (~5.2 eV), , high density (~7.4 g cm -3 ), proper light yield (~2×10 4 photons.M eV -1 ) and radioluminescence [21], Gd2O3:Eu 3+ nanoparticles were selected as scintillators.…”

Section: Introductionmentioning

confidence: 99%

Stretchable scintillator composites for indirect X-ray detectors

Oliveira

Correia

Francesko

et al. 2018

Composites Part B: Engineering

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Flexible and stretchable materials are increasingly being investigated for future technological platforms, polymer based materials being the most suitable candidates for those emerging technologies. This work reports on polymer based scintillator composites based on the thermoplastic elastomer Styrene-Ethylene/Butadiene-Styrene (SEBS) and Gd2O3:Eu 3+ scintillator nanoparticles, to form a polymer-based flexible and stretchable material for X-ray indirect detectors. Further, visible light yield under X-ray irradiation was improved by the inclusion of 2,5 dipheniloxazol (PPO) and (1,4-bis (2-(5-phenioxazolil))-benzol (POPOP) within the polymer matrix. Together with high levels of stretchability, with deformations up to 100%, the films exhibit suitable performance with low mechanical hysteresis (less than 1.5 MJ/m 3 for cycles up to 100% of strain) and reproducibly such as a scintillator material for the conversion of X-ray radiation into visible radiation. The decrease of just ~13% of the X-ray radiation into visible light upon stretching up to 100% is attributed to a reduction of the effective filler concentration and proves the suitability of the developed materials for large area and stretchable X-ray radiation detectors.

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