Sample element distribution measuring device and method based on prompt gamma-ray neutron activation analysis
A technology of gamma ray and activation analysis, which is applied in the direction of measuring devices, material analysis using wave/particle radiation, and material analysis, can solve the problems of element spatial distribution information not being given, detection influence, etc., and achieve important application value Effect
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[0031] Measurement of chlorine distribution within an inhomogeneous sample
[0032] In this example, a 10×10×2cm 3 The volume of sodium chloride solution sample is measured in 2×2×2cm 3 The unit is divided into 25 blocks, and the concentration of sodium chloride in different positions is different such as figure 2 shown. The sample is placed on the measurement platform, and the distance from the neutron collimation port and the lead shielding device is 10cm. Apply high voltage to the D-D neutron generator and measure from the far left. The energy spectrum was collected and analyzed by the prompt gamma ray neutron activation analysis technique. image 3 Prompt gamma ray energy spectra were recorded at two different measurement positions, and it can be clearly seen that the energy spectrum has a significant difference at the chlorine element. Carry out the same measurement and analysis for each position, and use the calibration curve method to calculate the concentration of...
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