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OST Photonics supplies a variety of scintillation radiation detector solutions including NaI(Tl), LaBr3(Ce), and other scintillators. The scintillation detector for radiation are hermetically sealed assemblies that include an encapsulated scintillator, a photomultiplier tube (PMT), a magnetic shield, and a light-tight housing. This design has better yields and more consistent energy resolution than others, so these detectors are widely used for spectroscopy and radioisotope assay.
The two main components of the scintillation detector: scintillator and PMT are temperature-sensitive devices. During the use of energy spectrum measurement and analysis, peak stabilization should be done. The common method is to add a radioactive source to stabilize the peak.
In our actual work, sometimes customers provide drawings, OST Photonics manufactures the products according to the customer's design. Alternatively, OST Photonics designs the products according to the requirements of customers, and produces after the confirmation with customers.
The energy resolution refers to the minimum energy interval that a scintillation detector can measure for two incident particles of different energies. The single-energy particle with energy E is incident in the scintillator and absorbed completely, and transforms to an excited light of the scintillator, transmits, and then is detected by a photodetector and processed by the circuit so that the output pulse is a statistical distribution. The ratio of the full width at half maximum(FWHM) to the peak position of the distribution spectrum is defined as the energy resolution of the scintillation detector. The intrinsic energy resolution of the scintillator can be obtained by subtracting the contribution of the photodetector. In high-energy physics experiments, the standard deviation σ after Gaussian fitting of pulse distribution spectrum is used as energy resolution, but its physical meaning is different.
