Measuring radon concentration in air using a diffusion cloud chamber
Production of a pair of V-particles in the collision of a negative pion from the Cosmotron at Brookhaven National Laboratory and a proton at rest. This event can be interpreted as . Reprinted photograph from Ref. 9 with permission from The Physical Review. Copyright (1954) by the American Physical Society. http://prola.aps.org./abstract/PR/v93/i4/p861_1.
(Color online) View of the diffusion cloud chamber constructed by PHYWE (Ref. 17).
Schematic view of the observation volume of the diffusion cloud chamber.
Picture of a typical event seen with the diffusion cloud chamber. Observed tracks are produced by low energy electrons or muons.
Picture of an α particle from radon decay occurring in the diffusion cloud chamber.
Schematic view of the diffusion cloud chamber (vertical cut).
Noble gas abundances in the Earth’s atmosphere in ppm (parts per million) of volume.
Measurements of radon decays with the diffusion cloud chamber. The values shown are the number of counts during 5 min.
Summary of parameters and systematic errors.
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