87-Fr-206
Spin
Level energy(keV) Spin & Parity
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ground state (2+,3+)
ground state(+X) (7+)
5.31000E+02 (10-)
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)
205.998666132 ± 0.000030268 (amu) [mass excess = -1242.490 ± 28.195 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-4808.299 ± 33.458 (keV)
Strong Gamma-rays from Decay of Fr-206 (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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391.7 5. Alpha
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559.0 * 70. EC
575.3 *100. EC
628.6 * 31. 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
A 16 S AP
A 16 S AP
A 0.7 S 1
EC 16 S AP
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0