A GEOMETRY FOR THE CALIBRATION OF RADIOACTIVITY MEASURING INSTRUMENT

摘要

PURPOSE: A calibration geometry for a radioactivity measuring instrument is provided to reflect an inherent natural radiation characteristic of a measured medium to calibration of the radioactivity measuring instrument. CONSTITUTION: A calibration geometry(10) for a radioactivity measuring instrument comprises a frame(50), a medium receiving part(20), a circle receiving part(30), and a radioactivity measuring instrument receiving part(40). A measurement medium is fixed to the center part of the medium receiving part. The medium receiving part controls and receives the height of the measurement medium. The circle receiving part is arranged in a drawer type at an upper side of the medium receiving part.