57-La-131
Spin
Level energy(keV) Spin & Parity
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ground state 3/2+
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)
130.910070000 ± 0.000030000 (amu) [mass excess = -83769.256 ± 27.945 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-4060.816 ± 43.092 (keV)
Strong Gamma-rays from Decay of La-131 (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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26.20 36.45 IT
108.9 10.85 IT
169.4 81. IT
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108.08 25. EC
365.16 16.93 EC
417.78 17.95 EC
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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 59 M 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0