68-Er-149
Spin
Level energy(keV) Spin & Parity
----------------------------------------
ground state (1/2+)
7.41800E+02 (11/2-)
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)
148.942306000 ± 0.000030000 (amu) [mass excess = -53741.615 ± 27.945 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-9859 ± 299 (keV) [derived from systematical trend]
Strong Gamma-rays from Decay of Er-149 (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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661.0 0.02 EC,P
1677.9 0.02 EC,P
1688.4 0.03 EC,P
----------------------------------------------------------
171.5 * 7. EC
1577.9 * 10. EC
1748.4 * 36. EC
----------------------------------------------------------
171.5 6.46 EC
343.9 6.27 EC
1171.0 9.36 EC
111.3 1.11 IT
630.5 2.68 IT
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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 4 S 2
EC 8.9 S 2
ECP 8.9 S 2
IT 8.9 S 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0