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)
Resolution Comparison: CLLBC-CeBr3-NaI(Tl)
|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 %|