58-Ce-137
Spin
Level energy(keV) Spin & Parity
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ground state 3/2+
2.54290E+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)
136.907762364 ± 0.000000445 (amu) [mass excess = -85918.804 ± 0.415 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-2716.969 ± 8.133 (keV)
Strong Gamma-rays from Decay of Ce-137 (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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169.26 0.45 EC
762.30 0.2 EC
824.82 0.45 EC
254.29 11.12 IT
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10.61 0.82 EC
436.59 0.25 EC
447.15 1.68 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
EC 34.4 H 3
EC 9.0 H 3
IT 34.4 H 3
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Sm-144 (Z= 62, A=144), MT=108 (n,2α)
Fission Yields for Fission Products in JENDL-4.0 Fission Yield Data
- Neutron-induced Fission Yields (from main actinide nuclides) - Independent Fission Yield -
Product Nuclide Energy Fission Yield Uncertainty(1σ)
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Ce-137 U-235 High 6.064070e-12 3.880990e-12
Ce-137 U-238 High 1.969460e-15 1.260460e-15
Ce-137 Pu-239 Thermal 7.630770e-14 4.883700e-14
Ce-137 Pu-239 Fast 4.702730e-14 3.009750e-14
Ce-137 Pu-239 High 2.968920e-10 1.900110e-10
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Ce-137m Pu-239 High 6.677830e-09 5.342260e-09
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Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
- Neutron-induced Fission Yields (from main actinide nuclides) - Cumulative Fission Yield -
Product Nuclide Energy Fission Yield Uncertainty(1σ)
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Ce-137 U-235 High 6.064070e-12 3.880990e-12
Ce-137 U-238 High 1.969460e-15 1.260460e-15
Ce-137 Pu-239 Thermal 7.630770e-14 4.883700e-14
Ce-137 Pu-239 Fast 4.702730e-14 3.009750e-14
Ce-137 Pu-239 High 6.922640e-09 4.430490e-09
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Ce-137m Pu-239 High 6.677830e-09 5.342260e-09
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Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
→ Neutron-induced and Spontaneous Fission Yields of all nuclides in JENDL-4.0 Fission Yield Data