TlSr₂Br₅: New intrinsic scintillator for X-ray and γ-ray detection

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>New thallium based intrinsically activated scintillator for X-ray and gamma ray detection is reported. Luminescence and scintillation properties are measured under X-ray and γ-ray excitation sources at room temperature. This compound is grown from the melt using two zones vertical Bridgman method. X-ray induced emission spectrum exhibits intense luminescence band at 441 nm wavelength. Scintillation light yield and energy resolution are found to be 37,600 ± 3700 ph/MeV and 4.6% (FWHM), respectively under 662 keV excitation from <SUP>137</SUP>Cs source. Two decay time constants are obtained when sample is excited by γ-ray at room temperature. Measured properties revealed that this compound is a potential scintillator and could be used as radiation detector in different applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Scintillation properties of new TlSr2Br<SUB>5</SUB> crystal are presented. </LI> <LI> Efficient γ-rays detection is possible due to its high Z<SUB>eff</SUB> number and density. </LI> <LI> Energy resolution of 4.6% (FWHM) with 37,600 ± 3700 light yield is obtained. </LI> <LI> Two decay constants are observed under γ-ray excitation at room temperature. </LI> </UL> </P>