Dual mode CLLBC crystal offer 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.
Overview
Cesium Lanthanum Lithium BromoChloride (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. Due to the presence of Lithium however, 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.
|
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 us shaping time) 84% (12 us shaping time) |
|
Photons / MeV |
Approximately 45,000 / MeV |
|
Hygroscopic |
Yes |
|
6-Lithium Enrichment |
95% |
|
Energy Resolution at 662 keV |
< 3.5% FWHM (38x38 mm) |
Typical Energy Resolution CLLBC vs. CeBr3 vs. NaI(Tl)
|
Energy (keV) |
CLLBC |
CeBr3 |
NaI(Tl) |
|
30 keV (129-I) |
15% |
20% |
18% |
|
59.5 keV (241-Am) |
10% |
13% |
11% |
|
122 keV (57-Co) |
6.4% |
8% |
8.5% |
|
662 keV (137-Cs) |
3.2% |
4% |
7% |
|
1332 keV (60-Co) |
2.3% |
3% |
5.5% |
|
2600 keV (Th-228) |
1.8% |
2.5% |
4% |
CLLBC Graphs
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