New Tl2LaBr5: Ce3+ Crystal Scintillator for {\gamma}-Rays Detection

TL;DR

This paper reports on the development and preliminary characterization of a new Ce-doped Tl2LaBr5 crystal scintillator with high light yield and fast decay time, suitable for gamma-ray detection and medical imaging.

Contribution

First report on scintillation properties of Ce-doped Tl2LaBr5 crystal, demonstrating its potential for gamma-ray detection and medical imaging applications.

Findings

Maximum emission peaks at 435 nm (pure) and 415 nm (Ce-doped)

Light yield of 43,000±4,300 ph/MeV with 6.3% energy resolution

Decay time constant of 25 ns for 5% Ce-doped sample

Abstract

In this study we present our preliminary report on the scintillation properties of new Ce-doped Tl2LaBr5 single crystal. Two zones vertical Bridgman technique is used for the growth of this compound. Pure and Ce-doped samples showed maximum emission peaks at 435 nm and 415 nm, respectively. Best light yield of 43,000+-4300 ph/MeV with 6.3% (FWHM) energy resolution is obtained for 5% Ce-doped sample under {\gamma}-ray excitation. Single exponential decay time constant of 25 ns is observed for 5% Ce doped sample. Effective Z-number is found to be 67, therefore efficient detection of X- and {\gamma}-ray will be possible. Preliminary results revealed that this compound will be an ideal candidate for the medical imaging techniques. Further investigations are under way for the determination of optimized conditions of this compound.