55-Cs-122
Spin
Level energy(keV) Spin & Parity
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ground state 1+
1.40000E+02 8(-)
1.27050E+02 (5)-
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)
121.916108146 ± 0.000036164 (amu) [mass excess = -78144.759 ± 33.687 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-3535.815 ± 43.769 (keV)
Strong Gamma-rays from Decay of Cs-122 (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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45.85 1.66 IT
81.20 4.7 IT
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331.1 47.5 EC
512.0 4.18 EC
817.9 3.09 EC
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331.1 93.5 EC
497.1 79.48 EC
638.5 62.65 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 21.18 S 19
EC 3.70 M 11
IT 0.36 S 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0