Title of article
Observation and modeling of 222Rn daughters in liquid nitrogen
Author/Authors
Frodyma، نويسنده , , N. and Pelczar، نويسنده , , K. and Wَjcik، نويسنده , , M.، نويسنده ,
Pages
9
From page
21
To page
29
Abstract
The results of alpha spectrometric measurements of the activity of 222Rn daughters dissolved in liquefied nitrogen are presented. A direct detection method of ionized alpha-emitters from the 222Rn decay chain (214Po and 218Po) in a cryogenic liquid in the presence of an external electric field is shown. Properties of the radioactive ions are derived from a proposed model of ion production and transport in the cryogenic liquid. Ionic life-time of the ions was found to be on the order of 10 s in liquid nitrogen (4.0 purity class). The presence of positive and negative ions was observed.
Keywords
Alpha spectrometry , Positive and negative ions , ion mobility , High purity , Low-background , 222Rn
Journal title
Astroparticle Physics
Record number
2011864
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