[21a-W810-1~8] 2.1 Radiation physics and Detector fundamentals

[21a-W810-1] Scintillation properties on alkali metal element co-doped Eu:SrI₂ crystals

〇(M2)Tomoki Ito¹, Yuui Yokota², Shunsuke Kurosawa², Robert Kral³, Kei Kamada^2,4, Pejchal Jan³, Yuji Ohashi¹, Akira Yoshikawa^1,2,4 (1.IMR Tohoku Univ., 2.NICHe Tohoku Univ., 3.Physics ASCR Inst., 4.C&A Corp.)

Keywords:Scintillator,Halide crystal,Non-proprotionality response

We grew Na and K co-doped Eu:SrI₂ to investigate the co-doping effects on the crystal growth and scintillation properties. The Na1.0% and K1.0% co-doped Eu:SrI₂ crystals indicated high transparency. The light yields of Na,Eu:SrI₂ and K,Eu:SrI₂ crystals under g-ray irradiation were decreased and the non-proportionality response in the low energy region was improved than non-codoped one.