Gamma spectrometer radioactivity measurement sample box positioner

Abstract

For the fact that a sample box is positioned in the centre of a probe and directly contacted with the probe cannot be ensured in gamma energy spectrometer radioactive-measurement, the invention provides a gamma energy spectrometer radioactive-measurement sample box locator, and belongs to the field of radioactive detection. The locator is an organic material, and comprises a probe adapter and a sample box locating body; the probe adapter is annular; the inside diameter can be outwardly expanded and retracted; the sample box locating body is formed by an inner ring and an outer ring in a nesting manner; the outer ring is fixedly arranged on the probe adapter; the inner ring rotates in one direction corresponding to the outer ring; three rotary sheets are arranged on the ring surface of theouter ring in equal distance; one ends of the rotary sheets are rotatably connected with the outer ring; the other ends of the rotary sheets point to the centre of the inner ring, so that a regular triangle is formed; the centre of the triangle is superposed with the centre of the inner ring; and three detachable limiting columns for limiting the rotary sheets to rotate are arranged on the ring surface of the inner ring in equal distance. By means of the locator in the invention, the fact that the sample box is directly contacted with the probe and is positioned in the centre of the probe canbe ensured; and the detection high-efficiency and the accuracy of a detection result are ensured.

Description

technical field [0001] The invention belongs to the technical field of radioactive detection of samples, and in particular relates to a locator for a radioactive measurement sample box of a gamma energy spectrometer. Background technique [0002] In gamma spectrometer radioactivity measurement, factors such as the density, geometric shape and water content of the sample, the material, density and thickness of the sample box, and the measurement position of the sample at the probe are closely related. Among them, the influence of the position of the sample box on the probe (center alignment, spacing distance, etc.) on the radioactivity measurement results of the sample is easily overlooked by the experimenter. The probe of the γ-ray spectrometer is a cylindrical plane, and the best measurement position of the sample box should be at the centerline of the probe, and it is best to be in direct contact with the probe plane. If the sample box deviates from the center position of...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems that in the radioactivity measurement of the gamma spectrometer, the existing fixing device can not only ensure that the sample box is located at the center of the probe, but also ensure the direct contact between the sample box and the probe as much as possible, the present invention provides a radioactive measurement sample The box positioner can be adapted to probes with different diameters to ensure that the sample box placed in each time is located at the center of the probe, and the sample box can be in direct contact with the probe, which ensures the efficiency of sample radioactivity detection and the accuracy and stability of the test results

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