<P><B>Abstract</B></P> <P>Single crystals of Tl<SUB>2</SUB>LiYCl<SUB>6</SUB> with different mole% of Ce-concentration (0.5 and 5mol%) were presented. This material belongs to Chloro-elpasolite cry...
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https://www.riss.kr/link?id=A107653061
2017
-
SCOPUS,SCIE
학술저널
163-166(4쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>Single crystals of Tl<SUB>2</SUB>LiYCl<SUB>6</SUB> with different mole% of Ce-concentration (0.5 and 5mol%) were presented. This material belongs to Chloro-elpasolite cry...
<P><B>Abstract</B></P> <P>Single crystals of Tl<SUB>2</SUB>LiYCl<SUB>6</SUB> with different mole% of Ce-concentration (0.5 and 5mol%) were presented. This material belongs to Chloro-elpasolite crystal family and was grown by two zone vertical Bridgman technique. X-ray diffraction pattern of the Tl<SUB>2</SUB>LiYCl<SUB>6</SUB> single crystal was measured. X-ray diffraction analysis confirmed tetragonal crystal structure. The melting point of the sample was measured by DSC. Typical Ce<SUP>3+</SUP> ion emission spectra were observed when samples were excited by an X-ray source at room temperature. The observed emission spectra were located between 350nm and 530nm wavelength range and peaking around 430nm. Pulse height spectra of the samples under 662keV γ-rays excitation shows improvement in energy resolution with the increase of Ce-concentration in the host lattice. The energy resolutions were obtained to be 10.6% and 7.2% (FWHM) for 0.5% and 5% Ce<SUP>3+</SUP> concentration, respectively. Under γ-ray excitation, a maximum light yield of 23,800±2400ph/MeV was observed for 5% Ce-concentration. Studied samples of Tl<SUB>2</SUB>LiYCl<SUB>6</SUB>: Ce<SUP>3+</SUP> showed three exponential decay time components under γ-ray excitation. From the measured scintillation properties, we consider this material is a promising scintillator for radiation detection.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Scintillation characterization of Tl<SUB>2</SUB>LiYCl<SUB>6</SUB>: Ce<SUP>3+</SUP> were presented. </LI> <LI> Tl<SUB>2</SUB>LiYCl<SUB>6</SUB>: Ce<SUP>3+</SUP> were grown by two zone vertical Bridgman technique. </LI> <LI> It has high Z<SUB>eff</SUB> and could be a potential candidate for medical imaging technique. </LI> <LI> Energy resolution of 7.2% and light yield of 23,800±2400ph/MeV were obtained. </LI> <LI> Three decay time components were observed under γ-ray excitation. </LI> </UL> </P>