58-Ce-149
Spin
Level energy(keV) Spin & Parity
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ground state (3/2-)
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)
148.928426900 ± 0.000011000 (amu) [mass excess = -66669.913 ± 10.246 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
4369.452 ± 14.230 (keV)
Strong Gamma-rays from Decay of Ce-149 (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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57.7 *100. B-
86.4 * 20.2 B-
380.0 * 33.7 B-
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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
B- 5.3 S 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
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-149 U-235 Thermal 6.968490e-03 1.114950e-03
Ce-149 U-235 Fast 7.561320e-03 2.419630e-03
Ce-149 U-235 High 3.053990e-03 1.954560e-03
Ce-149 U-238 Fast 8.430670e-03 3.793800e-03
Ce-149 U-238 High 8.592580e-03 3.866660e-03
Ce-149 Pu-239 Thermal 5.619160e-03 3.596270e-03
Ce-149 Pu-239 Fast 6.415290e-03 4.105790e-03
Ce-149 Pu-239 High 2.164590e-03 1.385340e-03
Ce-149 Pu-241 Thermal 1.020190e-02 3.264600e-03
Ce-149 Pu-241 Fast 9.980010e-03 4.491000e-03
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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-149 U-235 Thermal 7.766880e-03 6.225390e-04
Ce-149 U-235 Fast 8.828880e-03 2.035430e-03
Ce-149 U-235 High 3.342760e-03 2.136490e-03
Ce-149 U-238 Fast 1.546230e-02 2.476460e-03
Ce-149 U-238 High 1.205590e-02 3.856500e-03
Ce-149 Pu-239 Thermal 5.980350e-03 2.691820e-03
Ce-149 Pu-239 Fast 6.802840e-03 3.062000e-03
Ce-149 Pu-239 High 2.278780e-03 1.457590e-03
Ce-149 Pu-241 Thermal 1.267380e-02 2.915700e-03
Ce-149 Pu-241 Fast 1.177850e-02 3.773150e-03
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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