ISOTOPES Np$sup 240$ AND Np$sup 24$$sup 1$
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
The 1-hour neptunium activity which had previously been assigned to Np/ sup 241/ was identified as the lower isomer of Np/sup 240/. The decay energy of the 1-hour Np/sup 240/ was found to be 2.05 Mev compared with 2.18 Mev for that of the 7.3-min Np/sup 240/. Gamma rays of energies 1160, 1000, 915, 595, 565, the decay of Np/sup 240/. The best value for the half-life of Np/sup 240/ is 63 plus or minus 2 min. The isotope Np/sup 241/ was found to have a 16-min half- life with strong evidence for an isomer with a 3.4hour half-life. (auth)
- Research Organization:
- Univ. of California, Berkeley
- NSA Number:
- NSA-14-015307
- OSTI ID:
- 4185824
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 118; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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