Annihilation of Positrons in Superconducting Lead
- 1 August 1956
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 103 (3) , 585-588
- https://doi.org/10.1103/physrev.103.585
Abstract
A search was made for changes in the two-quantum annihilation rate when positrons are annihilated in superconducting lead compared to normal lead. The change of state was brought about either by turning off or on a magnetic field or by varying the temperature of the sample. The ratio of the two-photon coincidence rate in normal lead to that in superconducting lead was found to be 1.0011±0.0016 in the magnetic field experiment and 1.0003±0.0011 in the temperature-varying experiment.Keywords
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