National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11075049]; Excellent Talents Program of Hengyang Normal University of China; construct program of the key discipline in Hunan province
机构署名：
本校为其他机构
院系归属：
核科学技术学院
摘要：
Radon exhalation rate is crucial in the estimation of radiation risk from various materials. RAD7 only focus on the count of the 218Po in sniff mode, and is well suited to measure radon exhalation rates. This paper presents a fast method for measuring radon exhalation from medium surface with a ventilation-type accumulation chamber by the RAD7 while making the effects of leakage and back diffusion negligible. The radon exhalation rate can be obtained from the measured values before radioactive equilibrium between Radon and progeny occurs. This method is based on the principle for tracing radon...
