77-Ir-189
Spin
Level energy(keV) Spin & Parity
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ground state 3/2+
3.72170E+02 11/2-
2.33320E+03 (25/2)+
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)
188.958715028 ± 0.000013716 (amu) [mass excess = -38456.703 ± 12.777 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-1971.278 ± 13.954 (keV)
Strong Gamma-rays from Decay of Ir-189 (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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247.6 45. IT
545.8 48. IT
701.5 43.5 IT
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59.05 1.2 EC
69.53 3.54 EC
245.08 6. EC
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113.82 11.31 IT
186.70 24.57 IT
300.51 40.95 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 13.2 D 1
IT 13.3 MS 3
IT 3.7 MS 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0