TITLE

Generation and control of thoron emanated from lantern mantles

AUTHOR(S)
Sorimachi, Atsuyuki; Sahoo, Sarata Kumar; Tokonami, Shinji
PUB. DATE
January 2009
SOURCE
Review of Scientific Instruments;Jan2009, Vol. 80 Issue 1, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper describes the performance of a thoron (220Rn) flowthrough source made of a commercially available lantern mantle. This 220Rn source is easy to construct and operate and has a negligible radon (222Rn) gas generated when the air was passed through the source. We studied the 220Rn concentration generated from the lantern mantles in terms of the variability in concentration associated with both the total weight of the lantern mantles used in the source and the air flow rate used in the experimental chamber. We found that the concentration of 220Rn generated in air ranged from 0.9 to 150 kBq m-3 and exponentially depended on the absolute humidity. The 220Rn concentration increased linearly with increasing total weight of the lantern mantles, but variations in the rate of air flow passed through the source had no influence on the observed 220Rn concentration.
ACCESSION #
36425903

 

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