LaCI3 crystal (also known as lanthanum chloride crystal ) is a kind of scintillation crystal with excellent comprehensive performance, which is widely used in the field of high energy physics and nuclear logging. LaCI3 crystal has high-temperature resistance, and its optical output is almost constant in the temperature range of room temperature to 220 ℃. It can fully meet the temperature demand of underground logging. LaCI3 has stable physical and chemical properties, high thermal conductivity, and resistance to harsh environments. It has excellent scintillation performance, such as high scintillation efficiency, stable light output, fast to decay time (about 28ns ), low energy resolution (< 3.3% @ 662kev ). Laci3 crystal is widely used γ Detector (γ-ray logging), Neutron Detector  (neutron logging) , Nuclide identification instrument and other equipment.


Material and Scintillator Properties

Property Value
Density (g/cm33.8
Melting point (℃)860
Emission peak (nm)350, 430
Decay time (ns)28
Energy resolution R (%)10.5 ± 0.9
Photon yield (103 ph/MeV)34 ± 1
Light yield (photons/keV)49
Light output (photons/MeV)50,500
Absorbed γ-ray energy (keV) 662, 60
Photoelectron yield [% of NaI(TI)]
(for γ-rays) 


LaCl3 Decay Time
LaCl3 Transmission Spectra


  • High energy resolution
  • The physical and chemical properties are stable
  • Stable optical output
  • High scintillation efficiency
  • The Gamma ray is extremely sensitive
  • High light yield


  • Gamma ray detector
  • Neutron detector
  • Nuclide identification instrument


[1]  Vandarkuzhali S ,  Gogoi N ,  Ghosh S , et al. Electrochemical behaviour of LaCl3 at tungsten and aluminium cathodes in LiCl–KCl eutectic melt[J]. Electrochimica Acta, 2012, 59(none):245-255.
[2]  Crosswhite H M ,  Newman D J . Spin-correlated crystal field parameters for lanthanide ions substituted into LaCl3[J]. The Journal of Chemical Physics, 1984, 81(11):4959-4962.
[3] Yu, Pei, and, et al. Growth and luminescence characteristics of undoped LaCl3 crystal by Modified Bridgman Method – ScienceDirect[J]. Journal of Crystal Growth, 2005, 279(3-4):390-393.

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