Method for acquiring source peak detection efficiency of cylindrical detector to point source
A technology of detection efficiency and acquisition method, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve complex acquisition problems, achieve the effects of expanding the application range, obtaining parameters in a short time-consuming, and simple methods
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[0018] Embodiment 1: The present invention will be described in more detail through the drawings and specific embodiments below.
[0019] Embodiment adopts the CeBr of SCIONIX company 3 Cylindrical detector, after geometric structure calibration (the schematic diagram of the vertical section of the central axis is shown in figure 2 Shown) parameters are respectively: cylinder detector bottom surface radius r=1.27cm, height l=2.54cm; the size of each shielding layer from inside to outside is: AlO 3 Vertical thickness D of the top surface of the reflective layer 1 =0.05cm, side axial length C 1 =0.05cm, the vertical thickness D of the top surface of the polyethylene damping layer 2 =0.83cm, side axial length C 2 =0.355cm, vertical thickness D of Al shell top surface 3 =0.08cm, side axial length C 3 = 0.125 cm. Cs-137 source characteristic gamma ray energy E=661.657keV, look up gamma ray and matter interaction cross-section database to know AlO 3 The total attenuation co...
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