89-Ac-224
Spin
Level energy(keV) Spin & Parity
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ground state 0-
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)
224.021723163 ± 0.000004450 (amu) [mass excess = 20234.997 ± 4.146 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
241.053 ± 10.831 (keV)
Strong Gamma-rays from Decay of Ac-224 (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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140.7 0.32 Alpha
144.44 0.2 Alpha
156.82 0.74 Alpha
84.4 1.52 EC
131.35 26.9 EC
215.75 52.29 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
A 2.78 H 17
EC 2.78 H 17
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Ac-225 (Z= 89, A=225), MT= 16 (n,2n)
Ac-226 (Z= 89, A=226), MT= 17 (n,3n)
Ac-227 (Z= 89, A=227), MT= 37 (n,4n)