55-Cs-140
Spin
Level energy(keV) Spin & Parity
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ground state 1-
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)
139.917283063 ± 0.000008804 (amu) [mass excess = -77050.330 ± 8.202 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
6219.896 ± 9.886 (keV)
Strong Gamma-rays from Decay of Cs-140 (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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602.25 53.3 B-
908.25 8.69 B-
1200.3 4.79 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- 63.7 S 3
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Ba-140 (Z= 56, A=140), MT=103 (n,p)
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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Cs-140 U-235 Thermal 2.066740e-02 5.786870e-04
Cs-140 U-235 Fast 3.040660e-02 1.824400e-03
Cs-140 U-235 High 2.607590e-02 8.344300e-03
Cs-140 U-238 Fast 8.875890e-03 2.041460e-03
Cs-140 U-238 High 1.732250e-02 5.543210e-03
Cs-140 Pu-239 Thermal 2.276250e-02 3.642010e-03
Cs-140 Pu-239 Fast 2.755620e-02 8.817990e-03
Cs-140 Pu-239 High 1.917040e-02 6.134520e-03
Cs-140 Pu-241 Thermal 2.291040e-02 7.331330e-03
Cs-140 Pu-241 Fast 1.807240e-02 5.783180e-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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Cs-140 U-235 Thermal 5.714480e-02 8.072030e-04
Cs-140 U-235 Fast 5.728300e-02 1.611610e-03
Cs-140 U-235 High 3.543550e-02 8.138270e-03
Cs-140 U-238 Fast 5.787250e-02 1.157290e-03
Cs-140 U-238 High 4.472190e-02 7.148440e-03
Cs-140 Pu-239 Thermal 3.872190e-02 3.098240e-03
Cs-140 Pu-239 Fast 4.404390e-02 7.048040e-03
Cs-140 Pu-239 High 2.331480e-02 5.358950e-03
Cs-140 Pu-241 Thermal 5.589870e-02 6.148000e-03
Cs-140 Pu-241 Fast 5.128310e-02 5.645610e-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