Introduction:

The availability of the new scintillator materials LaCl3 and LaBr 3 offers a good opportunity for the design of new detector assemblies in different research fields. In particular, the total absorption 

technique employed in neutron capture measurements could be highly benefit from the use of these two scintillation materials due their excellent energy resolution and fast decay time properties.

LaCl3 crystal belongs to hexagonal system, density is 3.8g/cm3. Its energy resolution is 3.1%, decay time with 26 ns and a time resolution of 224 ps, there is almost no damage after exposure to 

gamma rays up to 3 kGy. Such excellent scintillation performance is very rare in inorganic compounds. The energy is 60 keV to 1275 keV. Under the excitation of γ-ray source, the nonlinear response

coefficient of light output is 7%, which is far superior to LSO:Ce crystal (35%), NaI: Tl crystal (15%) and CsI: Tl (20%). Based on its good numbers, this scintillation material can find its place in such 

applications as medical imaging, nuclear physics, X-ray diffraction, non-destructive evaluation, treaty verification and safeguards, environmental monitoring, and geological exploration.

Properties: