| Summary: | Sm-doped SrCl<sub>2</sub> crystals were prepared, and the scintillation properties such as emission spectra, decay profiles, and pulse height were investigated. Under X-ray irradiation, a broad band can be observed at 680 nm, which indicates that the major origin is due to 5d-4f transitions of Sm<sup>2+</sup>. The decay curve is approximated by one exponential function with a decay time of 10 μs, and the decay time constant is typical for Sm<sup>2+</sup>. From the pulse height of <sup>137</sup>Cs γ-rays, 0.1% Sm:SrCl<sub>2</sub> shows a light yield of 33,000 photons/MeV.
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