RADON CONCENTRATION MEASURING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a radon concentration measuring device suitable for measuring underground radon concentration. SOLUTION: This radon concentration measuring device comprises a measuring apparatus main body 1 having a predetermined space 7, a steam separating means 4 provided in a wall part partitioning the space and outside, a scintillator 6 provided in the space, a photomultiplier tube PMT detecting scintillation emitted from the scintillator, and a data collector analyzing the radon concentration on the basis of an output from the photomultiplier tube.