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You are here: Home / Bromide Crystal / LaBr3

Lanthanum Bromide, or LaBr3(Ce), is one of the new generation of inorganic scintillation gamma-ray detectors. Lanthanum Bromide scintillation material has been the reference for excellent energy resolution combined with fast emission and good linearity. Its comprehensive performance beyond the traditional high output with platinum nai scintillation crystals, is one of the best so far found flashing performance crystal, can be widely used in nuclear medicine imaging, geological exploration, oil well logging, space physics and nuclear radiation detection field.

LaBr3:Ce is a promising scintillator for gamma-ray spectroscopy.

LaBr3 introduces an enhanced set of capabilities to a range of gamma spectroscopy radioisotope detection and identification systems used in the homeland security market. Important requirements for the scintillation crystals used in these applications include high light output, high stopping efficiency, fast response, low cost, good linearity, and minimal afterglow. LaBr3 has attractive scintillation properties such as very high light output (~60,000 photons/MeV), and fast principle decay constant (30 ns). Based on these properties, LaBr3:Ce is a promising scintillator for γ-ray spectroscopy

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Parameter

Material and Specifications
MaterialsLaBr3
Coordination geometryTricapped trigonal prismatic
Crystal structurehexagonal
Space groupP63/m, No. 176
Appearancewhite solid, hygroscopic
Physical and Chemical Properties
Density (g/cm3)5.2
Melting point (℃)1116
Hardness (Mohs)3
Molar mass378.62 g/mol
Melting point783 °C (1,441 °F; 1,056 K)
Boiling point1,577 °C (2,871 °F; 1,850 K
Solubility in waterVery soluble
Optical and Spectral Properties
Decay time (ns)25
Light yield (photons/keV)63
Radiation length (cm)1.881
Attenuation(mm)@511keV22
Emission peak wavelength(nm)370
Refractive index @ emission max~1.9
Reflection loss/surface (%)6.8
Radiation Length(g·cm-2)9.95
Moliere Radius(cm)2.816
Energy resolution(%)@662keV2.9
Spectrum
LaBr3 Emission SpectraLaBr3 attenuation with coherent scattering
Feature
Application
Literature
Feature
  • Fast decay times – 25nsec
  • High light outputs – 63,000 Photons/MeV
  • The capability to achieve excellent Energy Resolution(e.g. c.2.6%@662keV, 2” Dia./2” Long)
  • Optical outputs with good linearity with temperature
  • The capacity to deal with high count rates
  • Excellent radiation hardness
Application
  • Security – cargo inspection
  • Medical – SPECT
  • Industrial – Well logging
  • Nuclear and high energy physics – specialist applications
  • Oil & Gas Exploration – well logging
  • Industrial – Coal/mineral assay
Literature
Active Interrogation of Nuclear Materials Using LaBr 3 : Ce Detectors
Feasibility study of a high-performance LaBr 3 (Ce) calorimeter for future lepton flavor violation experiments
Spectrometric performances of high quantum efficiency multi and single anode PMTs coupled to LaBr3(Ce) crystal
PerformanceoflargevolumeLaBr 3 scintillationdetectorequippedwith specially-designedshieldforneutronresonancecaptureanalysis
Performance assessment of a 500 mm 3  CZT and a 2×2 inch LaBr 3 (Ce) detectors for the determination of the uranium enrichment using the enrichment-meter method and calibration standards for safeguards applications
Nanosecond lifetime measurements of I π ¼9/2 – intrinsic excited states and low-lying B(E1) strengths in 183 Re using combined HPGe-LaBr 3 coincidence spectroscopy
Position sensitivity in large spectroscopic LaBr3:Ce crystals for Doppler broadening correction
Investigation of the possibility of improving spatial resolution in SPECT with the combination of LaBr 3 :Ce-based detector and 3D-OSEM reconstruction algorithms
Investigation of the potential use of LaBr 3 :Ce scintillators for scintimammography imaging

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