TY - JOUR
T1 - Effects of Na and K co-doping on growth and scintillation properties of Eu:SrI2 crystals
AU - Ito, Tomoki
AU - Yokota, Yuui
AU - Kurosawa, Shunsuke
AU - Kral, Robert
AU - Pejchal, Jan
AU - Ohashi, Yuji
AU - Kamada, Kei
AU - Nikl, Martin
AU - Yoshikawa, Akira
PY - 2016/7
Y1 - 2016/7
N2 - We grew Na and K co-doped Eu:SrI2 [Na,Eu:SrI2 and K,Eu:SrI2] crystals by a modified micro-pulling-down method to reveal the co-doping effects on the crystal growth and scintillation properties. The non-codoped, Na0.5%, Na1.0%, K0.5% and K1.0%,Eu:SrI2 crystals indicated high transparency while the milky parts were generated in the Na5.0% and K5.0%,Eu:SrI2 crystals. The light yields of Na,Eu:SrI2 and K,Eu:SrI2 crystals under γ-ray irradiation were decreased by the Na and K co-doping. On the other hand, there was a small change within 940–1020 ns in the decay times by the Na and K co-doping. In the light yield proportionality under γ-ray irradiation, the non-proportionality in the low energy region was improved by Na and K co-doping.
AB - We grew Na and K co-doped Eu:SrI2 [Na,Eu:SrI2 and K,Eu:SrI2] crystals by a modified micro-pulling-down method to reveal the co-doping effects on the crystal growth and scintillation properties. The non-codoped, Na0.5%, Na1.0%, K0.5% and K1.0%,Eu:SrI2 crystals indicated high transparency while the milky parts were generated in the Na5.0% and K5.0%,Eu:SrI2 crystals. The light yields of Na,Eu:SrI2 and K,Eu:SrI2 crystals under γ-ray irradiation were decreased by the Na and K co-doping. On the other hand, there was a small change within 940–1020 ns in the decay times by the Na and K co-doping. In the light yield proportionality under γ-ray irradiation, the non-proportionality in the low energy region was improved by Na and K co-doping.
KW - Alkali metal
KW - Eu:SrI
KW - Light yield
KW - Non-proportionality
KW - Scintillator
KW - Single crystal
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U2 - 10.1016/j.radmeas.2016.01.025
DO - 10.1016/j.radmeas.2016.01.025
M3 - Article
AN - SCOPUS:84962073256
VL - 90
SP - 157
EP - 161
JO - Radiation Measurements
JF - Radiation Measurements
SN - 1350-4487
ER -