86-Rn-209
Spin
Level energy(keV) Spin & Parity
----------------------------------------
ground state 5/2-
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)
208.990414510 ± 0.000021915 (amu) [mass excess = -8928.826 ± 20.414 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-5160.869 ± 25.148 (keV)
Strong Gamma-rays from Decay of Rn-209 (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
----------------------------------------------------------
337.45 14.51 EC
408.32 50.3 EC
745.78 22.79 EC
----------------------------------------------------------
*: 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 28.8 M 9
EC 28.5 M 10
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0