Electron capture decay of /sup 85g/Sr
In order to resolve the controversy concerning the existence of an 568 keV gamma -transition in the decay of 65d /sup 85g/Sr and to determine the electron capture decay energy, radiochemically separated sources, Ge (Li), Ge(Li)- NaI(Tl), and NAI(Tl)-NaI(Tl) spectrometers were used for singles and X-ray -- gamma and gamma - gamma coincidence measurements. A gamma -ray at 868.5 plus or minus 0.5 keV decaying with a 65 plus or minus 5 d half-life was conclusively identified in /sup 85g/Sr decay. From measurements of the ratio P/ sub K(368.5//P/sub K)514)/ of K-capture probabilities b y KX-ray-- gamma coincidences, a value of Q/sub EC/ was determined for the EC decay feeding the 868.5 keV transition. Thus, a level in /sup 85/Rb is established at 868.5 keV, and an upper limit of 0.45 mu sec is set on its lifetime. (auth)
- Research Organization:
- Georgia Inst. of Tech., Atlanta
- NSA Number:
- NSA-29-019689
- OSTI ID:
- 4358287
- Journal Information:
- Nucl. Phys., A, v. A219, no. 3, pp. 595-600, Journal Name: Nucl. Phys., A, v. A219, no. 3, pp. 595-600; ISSN NUPAB
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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