Radioactivity activity transfer and measuring device and activity measuring method
A radioactivity and measurement device technology, applied in the field of radioactivity transfer measurement devices, can solve problems such as difficulty in comparison and verification, and achieve the effects of reducing volume and weight, facilitating movement, and improving detection efficiency
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Embodiment 1
[0117] According to the above-mentioned device, the diameter of the well of the detector 3 is 40mm, the depth of the well is 10mm, and the diameter and depth of the well cooperate to form a solid angle of 72.4%.
[0118] Using the cascade coincident sum peak method, the standard point source to be measured is 125 I, the measured solution specific activity is 1.358MBq·g -1 , the uncertainty U is 0.95% (k=2); the measurement result of the disclosed device and the standard point source deviation are -0.44%, which is less than the combined uncertainty of the two specific activity measurement results It shows that the measurement results of the disclosed device are accurate and reliable.
[0119] Using the 4πγ counting method, the standard point source to be tested is 152 Eu, the measured activity is 3.03×10 4 Bq, the uncertainty U is 1.5% (k=2); the deviation between the measurement result of the disclosed device and the standard point source is -1.3%, which is less than the c...
Embodiment 2
[0121] According to the above-mentioned device, the diameter of the well of the detector 3 is 40mm, the depth of the well is 20mm, and the diameter and depth of the well cooperate to form a solid angle of 85.4%.
[0122] Using the cascade coincident sum peak method, the standard point source to be measured is 125 I, the measured solution specific activity is 1.360MBq·g -1 , the uncertainty U is 0.80% (k=2); the measurement result of the disclosed device and the standard point source deviation are -0.29%, which is less than the combined uncertainty of the two specific activity measurement results It shows that the measurement results of the disclosed device are accurate and reliable.
[0123] Using the 4πγ counting method, the standard point source to be tested is 152 Eu, the measured activity is 3.02×10 4 Bq, the uncertainty U is 1.6% (k=2); the deviation between the measurement result of the disclosed device and the standard point source is -1.6%, which is less than the c...
Embodiment 3
[0125]According to the above-mentioned device, the diameter of the well of the detector 3 is 40mm, the depth of the well is 94mm, and the diameter and depth of the well cooperate to form a solid angle of 98.9%.
[0126] Using the cascade coincident sum peak method, the standard point source to be measured is 125 I, the measured solution specific activity is 1.361MBq·g -1 , the uncertainty U is 0.81% (k=2); the measurement result of the disclosed device and the standard point source deviation are -0.22%, which is less than the combined uncertainty of the two specific activity measurement results It shows that the measurement results of the disclosed device are accurate and reliable.
[0127] Using the 4πγ counting method, the standard point source to be tested is 152 Eu, the measured activity is 3.06×10 4 Bq, the uncertainty U is 1.5% (k=2); the measurement result of the disclosed device and the standard point source deviation is -0.3%, which is less than the combined uncer...
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Abstract
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