Thermoluminescence properties of 30Y2O3·30P2O5·40SiO2 vitroceramics in mixed neutron-gamma fields

Barna Biró; András Fenyvesi; Alida Timar-Gabor; Viorica Simon

doi:10.1016/j.apradiso.2018.01.039

Thermoluminescence properties of 30Y₂O₃·30P₂O₅·40SiO₂ vitroceramics in mixed neutron-gamma fields

Appl Radiat Isot. 2018 May:135:224-231. doi: 10.1016/j.apradiso.2018.01.039. Epub 2018 Jan 31.

Authors

Barna Biró¹, András Fenyvesi², Alida Timar-Gabor³, Viorica Simon⁴

Affiliations

¹ Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), 18/c. Bem tér, H-4026 Debrecen, Hungary; Faculty of Physics, Babeş-Bolyai University, 1 Mihail Kogălniceanu, 400084 Cluj-Napoca, Romania.
² Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), 18/c. Bem tér, H-4026 Debrecen, Hungary. Electronic address: fenyvesi.andras@atomki.mta.hu.
³ Interdisciplinary Research Institute on Bio-Nano-Science of Babeş-Bolyai University, 42 Treboniu Laurean, 400271 Cluj-Napoca, Romania; Faculty of Environmental Science and Engineering, Babeş-Bolyai University, 30 Fântânele, 400294 Cluj-Napoca, Romania.
⁴ Faculty of Physics, Babeş-Bolyai University, 1 Mihail Kogălniceanu, 400084 Cluj-Napoca, Romania; Interdisciplinary Research Institute on Bio-Nano-Science of Babeş-Bolyai University, 42 Treboniu Laurean, 400271 Cluj-Napoca, Romania.

PMID: 29433098
DOI: 10.1016/j.apradiso.2018.01.039

Abstract

Powders of the 30Y₂O₃·30P₂O₅·40SiO₂ vitroceramic were irradiated with broad spectrum d+Be (E_neutron = 0-14.5 MeV) and quasi-monoenergetic d+D neutrons (E_neutron = 12.4 ± 0.22 MeV). The absorbed dose of d+Be neutrons was D_n = 2.52 ± 8% Gy with D_γ = 0.22 ± 14% Gy accompanied gamma absorbed dose. The absorbed dose of d+D neutrons was D_n = 1.43 ± 8% Gy with D_γ = 0.21 ± 14% Gy gamma absorbed dose. The thermoluminescence (TL) induced in the vitroceramics was studied. Both the gamma and neutron component contributed to the TL signals. The relative neutron sensitivities were [(TL_n/TL_γ)/(D_n/D_γ)]_d+Be = 0.04 ± 60% and [(TL_n/TL_γ)/(D_n/D_γ)]_d+D = 0.11 ± 43%.

Keywords: Dosimeter; Foil Activation Technique; Mixed neutron-gamma field; Thermoluminescence; Twin ionisation chamber; Vitroceramics.