Nai Scintillation Detector Photomultiplier
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Chapter 4 RADIATION MONITORING INSTRUMENTS
www-naweb.iaea.orgA gas filled detector is usually cylindrical in shape, with an outer wall and a ... inorganic phosphors such as NaI(Tl) or CsI(Tl). A photomultiplier tube (PMT) is optically coupled to the scintillator to ... like scintillation detectors, belong to the …
Basic Principles of Gamma Camera Imaging and ... - AAPM
amos3.aapm.orgArray of Photomultiplier Tubes (PMTs): Localizes the position where the gamma ray ... coefficient of the scintillation material (how likely that a gamma ray is absorbed and detected rather than just pass through) ... in measured energy across the detector
Chapter 4 Scintillation Detectors - McMaster Faculty of ...
www.science.mcmaster.caChapter 4 Scintillation Detectors 4.1. Basic principle of the scintillator Scintillator Ionizing radiation Light (visible, UV) Light sensor Fig. 4.1. Principle of the scintillation detectors. Scintillates are one of the oldest types of radiation detector because measurements could be made with photographic film.
Gamma Ray Spectroscopy - Department of Physics
www.phys.ufl.eduFigure 1: Block diagram for a scintillation de-tector system. minimize the effects of background gamma ra-diation, the detector is surrounded by a thick metal shielding tube. The PMT consists of a photocathode fol-lowed by a series of dynodes (6-10 is typical) followed by, and ending with a collection an-ode. Scintillation photons striking the ...
Radiation Detection and Measurement - University of …
depts.washington.eduphotomultiplier tubes. The statistical fluctuation in the number of light quanta collected and their amplification is what causes the spread in the detected energy peak, even when most of the Tc-99m photons deposit exactly 140 keV in the NaI(Tl) crystal.