Radiation Monitoring Devices (RMD)
CLLBC
CLLBC Gamma-Neutron Scintillator
CLLBC (Cs2LiLa(Br,Cl)6:Ce): a dual-mode gamma-neutron scintillator can be used as a replacement for both high energy resolution gamma-ray detectors and high pressure Helium-3 tubes for neutron detection. The ease of using pulse height as well as pulse shape discrimination (PSD) for neutron detection, combined with gamma-ray energy resolution better than Thallium-doped Sodium Iodide (NaI:Tl) or Thallium-doped Caesium Iodide (CsI:Tl) and in the working range of Cerium-doped Lanthanium Bromide (LaBr3:Ce), make it an ideal solution for several classes of handheld instruments, including Spectroscopic Personal Radiation Detectors (SPRDs) and Radionuclide Identification Devices (RIIDs).
It can be packaged with a temperature sensor and a SiPM array. The resulting CLLBC-SiPM sensor offers a compact and low voltage requirement reliable signal for neutron detection and gamma-ray spectroscopy.
- Material: Cs2LiLa(Br,Cl)6:Ce
- Melting Point: 540°C
- Density: 4 g/cm3
- Crystal Structure: Cubic
- Cleavage Planes: None
- Water Solubility: Hygroscopic
- Emission Spectral Range: 350 – 450 nm
- Peak Scintillation Wavelength: 410 nm
- Decay Constants (Ce3+, Ce-STE): 115 ns, 500 ns,1500 ns
- Scintillation Light Yield: 45,000 ph/MeV
- GEE for Thermal Neutrons: 3.1 MeV
- X-ray Absorption Coef. at 100 KeV: 5.49 cm-1
- X-ray Absorption Coef. at 662 KeV: 0.298 cm-1
- Radiation Length: 2.45 cm
Size
- 25mm diameter/25mm long cylinder
- 38mm diameter/38mm long cylinder
- 50mm diameter/50mm long cylinder
Package Style
- Sealed package, one end window
- Sealed package and permanently mounted to a photomultiplier tube (PMT)
- Permanently packaged with Silicon Photomultiplier (SiPM) array(s) and temperature sensor
Energy Resolution
<= 4% FWHM
(measured at 22oC on a reference PMT with a superbialkali photocathode)