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Gamma Ray Spectroscopy - Department of Physics
www.phys.ufl.eduScintillation Detector A block diagram for a typical scintillation de-tection system is shown in Fig. 1. The scin-tillation detector is illustrated in Fig. 2. Our detector has a 4×4 inch cylindrical NaI scintil-lation crystal which is activated with about 1 part in 103 thallium impurities. Through var-ious processes, a gamma ray passing into the
Principles and Applications of Liquid Scintillation Counting
ehs.psu.edurather than in a solid crystal. This allows close contact between the isotope atoms and the scintillator, which is not possible with solid scin-tillation. With LSC the short path length of soft β emissions is not an obstacle to detection. Liquid scintillation cocktails absorb the energy emitted by radioiso-topes and re-emit it as flashes of light.