Characteristic and performance of a simple thoron chamber.
For calibration and intercomparison experiments, a thoron chamber with an inner volume of 300 l was designed based on a programmable constant temperature and humidity testing device in this work. The commercial lantern mantles enriched with (232)Th were used as the (220)Rn source and the mantles were set in 3×3×3 points of lattice style inside the chamber. Experimental studies showed that (220)Rn concentrations in the chamber could be easily controlled and adjusted from about 0.5 to 80 kBq m(-3) through manual settings of the relative humidity and temperature, and the spatial distribution of (220)Rn in the chamber was fairly homogeneous.
Zhao
C
C
Institute of Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai, P.R. China.
Zhuo
W
W
Chen
B
B
Zhang
H
H
D000396:Air Pollutants, Radioactive; D016902:Air Pollution, Indoor / Q000032:analysis*; D002138:Calibration; D004867:Equipment Design; D005740:Gases; D006813:Humidity; D011834:Radiation Monitoring / Q000295:instrumentation*; D011874:Radiometry; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D013696:Temperature
D000396:Air Pollutants, Radioactive; D005740:Gases; D017687:Radon Daughters; D011886:Radon