LIQUID GAMMA RADIATION DETECTION DEVICE AND SPECTROMETRIC INSTALLATION FOR MEASURING VOLUME ACTIVITY OF GAMMA RADIATING RADIONUCLIDES IN A LIQUID

摘要

1. A device for detecting gamma radiation in liquid media, including at least one gamma radiation detector with a sensitive element based on a crystal scintillator and a measuring chamber, a gamma radiation detector and a measuring chamber are placed in a lead protective block, which is made in the form of a composite structure made of disks stacked on top of each other and in which a technological channel is provided for installing a measuring chamber, characterized in that the sensitive element of the gamma radiation detector is made on the basis of a crystal of lanthanum bromide doped with cerium LaBr: Ce, the gamma radiation detector is placed horizontally in the lead protective block and is oriented by the sensing element towards the measuring chamber, the measuring chamber is made in the form of a cylindrical capsule, in which there are nozzles for supplying and removing the medium, and is installed in the process channel oriented vertically, and holes for the outlet are provided in the protective block nozzles for supply and discharge of medium. 2. The detection device according to claim 1, characterized in that it includes two horizontally oriented gamma-ray detectors. A detection device according to claim 2, characterized in that the gamma-ray detectors are located in the central part of the lead protective block. The detection device according to claim 3, characterized in that the gamma-radiation detectors are installed on the same axis on opposite sides of the measuring chamber. A detection device according to any one of claims 1 to 4, characterized in that the measuring chamber is made of stainless steel. The detection device according to claim 5, from