Growth of 1.5-In Eu : ${\rm SrI}_{2}$ Single Crystal and Scintillation Properties

We grew 1.5-in Eu doped
${\rm SrI}_{2}$
(
${\rm Eu}:{\rm SrI}_{2}$
) bulk single crystal by a modified vertical Bridgman (VB) method using a removable chamber and high-frequency induction heating. As-grown 1.5-in
${\rm Eu}:{\rm SrI}_{2}$
bulk single crystal had no visible crack and inclusion in the crystal. In the transmittance and
$\alpha $
-ray radioluminescence spectra, large absorption below 433 nm and emission peak at 433 nm were observed, respectively. Each polished
${\rm Eu}:{\rm SrI}_{2}$
specimen indicated
$56 \thinspace 000 \sim 62 \thinspace 000\ \hbox{ph/MeV}$
light yield and
$3.3 \sim 3.9\%$
energy resolution. The decay times of the specimens were
$0.61 \sim 0.67\ \mu \hbox{s}$
.