Efficient Positronium Formation by Slow Positrons Incident on Solid Targets
- 1 July 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 33 (1) , 7-10
- https://doi.org/10.1103/physrevlett.33.7
Abstract
A beam of slow positrons in the few-eV region is directed at bakable solid targets in a vacuum of (2-4) × Torr. Measurements of the annihilation-yield ratio indicate the conversion of the incident positrons into positronium. The conversion efficiency depends on the target material and incident positron energy, varying from less than 25% at 300 K to 40-85% at 900 K.
Keywords
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