Scintillation Properties of Ba$_{x}$ Sr$_{1 - {x}}$Cl$_{2}$ Single Crystals

In this paper, we present scintillation properties of the new developed single crystals of Ba
_x
Sr
_1-x
Cl
₂
for different concentration of x. We manufactured Ba
_0.12
Sr
_0.88
Cl
₂
, Ba
_0.20
Sr
_0.80
Cl
₂
, Ba
_0.22
Sr
_0.78
Cl
₂
crystals, and CsI(Tl) crystal as reference by using the Czochralski method. The crystals were cut into a size of 5 times 10 times 10 mm
³
. The X-ray diffraction technique was used to verify the structure of crystals. The emission spectra were measured with X-ray excitation at room temperature. Scintillation properties of the crystals such as pulse height spectra, energy resolution, alpha/beta ratio, relative light output, proportionality, and fluorescence decay time were measured with the various radioactive gamma sources at room temperature. The light output of these crystals were compared with that of the CsI(Tl) crystal. The differences in relative light outputs, energy resolutions, and decay times among these crystals were studied in detail.