Positronium Spin Conversion by Phosphorescent Impurities in Gases
- 14 March 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 38 (11) , 595-599
- https://doi.org/10.1103/physrevlett.38.595
Abstract
Ultraviolet illumination of Ar, , or air containing trace amounts of S or benzaldehyde quenches positronium through interactions with photoexcited impurity triplet states. The measured interaction cross sections are large, , and appear to increase as in the range 300 to 400°K. Triplet concentrations as low as can be detected at atmospheric pressures.
Keywords
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