Anomalous Three-Quantum Decay of Positrons in Alkaline Earth Oxides
- 2 November 1964
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 136 (3A) , A657-A659
- https://doi.org/10.1103/physrev.136.a657
Abstract
The decay of positrons annihilating in alkaline earth oxides was investigated through lifetime and three- to two-quantum relative yield measurements. It was found that in these materials positrons display an anomalous behavior: the time annihilation spectrum is complex, exhibiting a long-life component, and the abundance of three-quantum events is exceptionally large. The observed abundance exceeds the value that can be calculated assuming positronium formation by a factor up to 15.Keywords
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