87-Fr-204
Spin
Level energy(keV) Spin & Parity
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ground state (3+)
4.90000E+01 (7+)
3.16000E+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)
204.000652059 ± 0.000026398 (amu) [mass excess = 607.390 ± 24.590 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-5439.745 ± 28.539 (keV)
Strong Gamma-rays from Decay of Fr-204 (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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230.9 -- Alpha
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113. -- Alpha
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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 1.6 S +5-3
A 1.9 S 5
A 0.8 S 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0