91-Pa-228
Spin
Level energy(keV) Spin & Parity
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ground state 3+
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)
228.031051673 ± 0.000004717 (amu) [mass excess = 28924.447 ± 4.394 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-297.909 ± 14.934 (keV)
Strong Gamma-rays from Decay of Pa-228 (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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463.02 20.89 EC
911.20 23.03 EC
968.98 13.89 EC
29.8 0.06 Alpha
43.3 0.05 Alpha
308.0 0.08 Alpha
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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
A 22 H 1
EC 22 H 1
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Pa-229 (Z= 91, A=229), MT= 16 (n,2n)
Pa-230 (Z= 91, A=230), MT= 17 (n,3n)