57-La-128
Spin
Level energy(keV) Spin & Parity
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ground state (5+)
ground state(+X) (1+,2-)
ground state(+Y) (1+,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)
127.915592123 ± 0.000058452 (amu) [mass excess = -78625.430 ± 54.448 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-3091.513 ± 61.200 (keV)
Strong Gamma-rays from Decay of La-128 (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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284.10 88.1 EC
479.31 51.36 EC
643.6 13.3 EC
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1934.8 -- EC
2063.2 -- EC
2345. -- 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 5.23 M 15
EC 1.4 M LT
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0