| abstract |
The invention discloses an on-line measuring system for alpha, beta and gamma ray activity in gas or liquid. The on-line measuring system at least includes a detector and an electronic processing unit; the detector is composed of a first measuring cavity and a second measuring chamber. A double-cavity structure composed of cavities, the first measurement cavity is a columnar structure and is wrapped inside the second measurement cavity, and the first measurement cavity and the second measurement cavity are separated by a first shell; to be measured The material is introduced into one end of the first measurement chamber through the inlet, and is exported through the outlet set at the other end. The first measurement chamber completes the signal acquisition of α, β, and γ particles in the material to be measured, and completes the α particle signal. Recognition, the second measuring chamber completes signal acquisition and identification of gamma particles in the material to be measured, and the electronic processing unit completes the activity measurement of alpha, beta, and gamma particles based on the scintillation light signal measured by the detector. |