This paper proposes that the radon exhalation rate can be calculated through three measurement cycles performed by a radon monitor based on the electrostatic collection method. The first cycle time is 20 min, the measured value in this cycle falls into disuse. The radon concentrations in the next two long cycles can be accurately measured. Because the 218Po concentration in the internal cell of the RAD7 is only dependent on the radon exhalation rate and the effective decay constant of radon, the radon exhalation can be obtained through two accurately measured values. The two equations that exp...
