  TlSr2I5: Eu2+ is a newly discovered scintillator and show promising
scintillation properties for X- and {\gamma}-rays spectroscopy applications.
Two zones vertical Bridgman technique is used for the growth of this
scintillator. Luminescence properties of the grown crystals are measured under
X-ray excitation at room temperature. Pure and Eu2+ doped crystals contained
broad emission bands between 445-670 nm peaking at 528 nm and 430-600 nm
peaking at 463 nm, respectively. Energy resolution, light yield and decay time
profiles are studied under 662 keV {\gamma}-ray excitation using 137Cs
radioactive source. Energy resolution of 4.2 % (FWHM) is obtained for 3 mol%
Eu2+ doped crystal. For the same sample, light yield of 70,000 ph/MeV is also
obtained. Three and two decay constants are observed for the pure and Eu2+
doped samples, respectively at room temperature. Effective Z-number and density
are found to be 61 and 5.30 g/cm3, respectively.
