A stand-alone natural gamma system designed to obtain both total and full spectral natural gamma data.
MSCL-NG Natural Gamma Core Logger
Fully automated core motion with linear precision of 0.1 mm
Two check sources are provided for energy calibration of the detectors
Core sizes up to 155cm in length and up to 150mm in diameter
ASCII text files data output
Natural Gamma Detectors
The sensor comprises two to four 3″ x 3″ NaI(Tl) detectors housed in 6″ diameter lead shields. Each detector uses a NaI(Tl) crystal optically coupled to a photomultiplier tube and a Multi-Channel Analyser (MCA). Each of the detectors has a resolution of 6-8% specified at the 0.662 MeV peak of 137Cs. The data are collected by the MCAs over the energy range 0-3 MeV.
The detectors make measurements over 1024 channels calibrated to correspond to 0-3 MeV energy range. In the full spectral mode the relative elemental yields of K, U and Th can be obtained if a suitable core standard (with known concentrations of K, U and Th) is available.