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Positron emission yields for encapsulated Na sources |
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| Authors: | G.R. Massoumi Peter J. Schultz W.N. Lennard J. Ociepa |
| Affiliation: | aDepartment of Physics, The University of Western Ontario, London, Ontario, Canada N6A 3K7 |
| Abstract: | We have measured the total γ-activity and the emitted positron yields from two commercial 22Na sources ( 5 mCi and 70 mCi). For the weaker source, we find good agreement between the number of positrons expected (based on γ-yield measurements) and those observed, after estimating the effect of positron absorption in the Ti window of the source capsule. The yield of positrons from the stronger source is a factor of two lower than expected. Reasons for the discrepancy are discussed. |
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