61-Pm-139
Spin
Level energy(keV) Spin & Parity
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ground state (5/2)+
1.88700E+02 (11/2)-
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer
Chinese Physics C36 p. 1603-2014, December 2012)
138.916799670 ± 0.000014593 (amu) [mass excess = -77500.608 ± 13.593 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-5120.390 ± 17.414 (keV)
Strong Gamma-rays from Decay of Pm-139 (Compiled from ENSDF as of March 2011)
[ Intensities before May 23th of 2013 were values when total intensity of the decay mode was 100(%) and a branching ratio of each decay mode was not multiplied. ]
γ-ray energy(keV) Intensity(%) Decay mode
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367.8 3.52 EC
402.8 14.5 EC
463.1 4.07 EC
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188.7 ? 39.78 IT
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*: relative, ~ approximate, ? calculated or estimatted
>: greater than or equal to, <: less than or equal to
[ Intensities; total intensity of the nuclide is 100(%). ]
Decay data(Chart of the Nuclides 2014)
Decay mode Half-life
EC 4.15 M 5
IT 180 MS 20
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0