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New Precision Technique for Removing Radioactive Emanations From Matter, and for Measuring Minute Quantities of Radon and Thoron
[thesis]
2009
I. INTRODUCTION: The accurate determination of the radium content of ordinary matter has many applications in cosmology and geophysics, but is a difficult analysis to carry out. Two problems are involved, first the removal of radon from the material being tested, then the accurate measurement of this radon by means of its alpha ray ionization. The radon removed and measured is about 10-18 gm. II. REMOVAL OF RADON FROM MATTER: The principles used heretofore for removing radon from liquids are
doi:10.7907/c3t8-0515
fatcat:3srlcfwcxrd5vlmix3qfl6scny