MEAN LIVES OF POSITRONS IN ALUMINUM AND THE ALKALI METALS
Journal Article
·
· Canadian Journal of Physics (Canada)
OSTI ID:4157475
The time distribution of positron annihilations in the metals aluminum, lithium. sodium, potassium, and cesium were measured with a fast time-to- amplitude converter. The decay curves appear to be complex, with about 5% of the events having a mean life of approximately 5 x 10/sup -10/ sec. The main (95%) components of the decay curves show the following mean lives, in units of 10/sup - 10/ sec: Al, 1.9 plus or minus 0.2; Li,2.9 plus or minus 0.2; Na,3.15 plus or minus 0.2; H.4.0 plus or minus 0.2; Cs,4.3 plus or minus 0.2. The results for the alkali metals disagree with the previously published measurements of De Benedetti and Richings (1952). These results are discussed and the lifetimes for other metals are predicted roughly from them and from the angular correlation measurements of other worke rs. (auth)
- Research Organization:
- Univ. of Copenhagen
- NSA Number:
- NSA-14-015206
- OSTI ID:
- 4157475
- Journal Information:
- Canadian Journal of Physics (Canada), Journal Name: Canadian Journal of Physics (Canada) Vol. Vol: 38; ISSN CJPHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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