CLLBC

Cesium Lanthanum Lithium BromoChloride (CLLBC, Cs₂LiLaBr₄.₈Cl₁.₂:Ce)

Dual mode CLLBC crystal offers an ideal solution for applications that require high-resolution gamma spectroscopy and Neutron detection in one scintillator. CLLBC scintillators feature energy resolution of 3% FWHM at 662 keV and excellent gamma/neutron separation using Pulse Shape Discrimination.

Cesium Lanthanum Lithium BromoChloride (CLLBC, Cs₂LiLaBr₄.₈Cl₁.₂:Ce) or CLLBC scintillators have similar properties to the well-known LaBr3:Ce material. Typical energy resolution for CLLBC scintillators is 3% FWHM for 662 keV. However, due to the presence of Lithium, CLLBC detectors can be used for Neutron detection in addition to high-resolution gamma spectroscopy. The material features a sharp Neutron peak between 3.1 and 3.2 MeV. In addition, CLLBC scintillators offer excellent neutron/gamma discrimination using PSD.

In addition, CLLBC offers excellent neutron/gamma discrimination using PSD.

  • Density: 4.08 g / cc
  • Maximum emission: 420 nm
  • Decay time (typical): 120 ns, 500 ns (average approx 150 ns)
  • Refractive index: 1.90
  • Photoelectron yield compared to NaI(Tl): 70 % (1.5 μs shaping time) – 84 % (12 μs shaping time)
  • Photons/MeV: Approx. 45.000/MeV
  • Hygrosopic: YES
  • 6-Lithium enrichment: 95 %
  • Energy resolution @ 662 keV: < 3.5 % FWHM (38×38 mm)
Dual mode CLLBC crystal offers an ideal solution for applications that require high-resolution gamma spectroscopy and Neutron detection in one scintillator
high-resolution gamma spectroscopy •Neutron detection • Pulse Shape Discrimination
Energy (keV) Typical Resolution CLLBC Typical resolution CeBr3 Typical resolution NaI(Tl)
30 (129-I)  15 %  20 %  18 % 
59.5 (241-Am)  10 %  13 %  10 % 
122 (57-Co)  6.4%  8 %  8.5 % 
662 (137-Cs)  3.2 %  4 %  7 % 
1332 (60-Co)  2.3 %  3 %  5.5 % 
2600 keV (Th-228)  1.8 %  2.5 %  4.0 % 
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