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)
Features
Uses
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 % |
