RADIOACTIVE DECAY OF W 188
Journal Article
·
· Canadian Journal of Physics
The half life of W/sup 188/ was measured to be 69.4 p 0.5 days. up 188/ were studied with a NaI scintillation spectrometer, and the beta radiations by absorption in aluminum. Three gamma rays with energies of 0.290 plus or minus 0.005, 0.227 i 0.005, and 0.063 plus or minus 0.005 Mev were observed. The intensities of these gamma rays were measured relative to those of gamma rays from the daughter activity Re/sup 188/. The W /sup 188/ gamma intensities thus deduced were respectively 0.002, 0.001, and about 0.001 per disintegration. The 0.227- and 0.063-Mev gamma rays were in coincidence. It was concluded that 99.3% of the beta radiations went to the ground state of Re/sup 188/ with an energy of 0.36 plus or minus 0.04 Mev, while sbout 0.4% went to an excited state at 0.290 Mev; an upper limit of 0.3% was set for a beta transition to the 0.063-Mev state. A decay scheme for W/sup 188/ was proposed. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-023022
- OSTI ID:
- 4823909
- Journal Information:
- Canadian Journal of Physics, Journal Name: Canadian Journal of Physics Journal Issue: 6 Vol. 40; ISSN 0008-4204
- Publisher:
- Canadian Science Publishing
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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