26-Fe-55
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)
54.938291994 ± 0.000000506 (amu) [mass excess = -57480.637 ± 0.472 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-3451.379 ± 0.324 (keV)
Strong Gamma-rays from Decay of Fe- 55 (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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126.0 1.E-07 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 2.744 Y 9
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Fe- 54 (Z= 26, A= 54), MT=102 (n,γ)
Fe- 56 (Z= 26, A= 56), MT= 16 (n,2n)
Ni- 58 (Z= 28, A= 58), MT=107 (n,α)
Ni- 59 (Z= 28, A= 59), MT= 22 (n,nα)