55-Cs-149
Spin
Level energy(keV) Spin & Parity
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ground state
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)
148.953020 ± 0.000210 (amu) [mass excess = -43762 ± 196 (keV) ]
[These values were derived from systematical trend]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
9259 ± 277 (keV) [derived from systematical trend]
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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Cs-149 U-235 Thermal 3.620010e-09 2.316810e-09
Cs-149 U-235 Fast 1.079100e-08 6.906250e-09
Cs-149 U-235 High 1.250420e-09 8.002670e-10
Cs-149 U-238 Fast 4.252300e-07 2.721470e-07
Cs-149 U-238 High 3.726460e-07 2.384940e-07
Cs-149 Pu-239 Thermal 1.042750e-10 6.673590e-11
Cs-149 Pu-239 Fast 1.145280e-10 7.329820e-11
Cs-149 Pu-239 High 5.543540e-10 3.547860e-10
Cs-149 Pu-241 Thermal 3.206710e-08 2.052290e-08
Cs-149 Pu-241 Fast 2.344860e-08 1.500700e-08
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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)
-----------------------------------------------------------
Cs-149 U-235 Thermal 3.620110e-09 2.316870e-09
Cs-149 U-235 Fast 1.079140e-08 6.906500e-09
Cs-149 U-235 High 1.250420e-09 7.990820e-10
Cs-149 U-238 Fast 4.252520e-07 2.720620e-07
Cs-149 U-238 High 3.727210e-07 2.382830e-07
Cs-149 Pu-239 Thermal 1.042750e-10 6.673590e-11
Cs-149 Pu-239 Fast 1.145280e-10 7.329820e-11
Cs-149 Pu-239 High 5.543540e-10 3.545560e-10
Cs-149 Pu-241 Thermal 3.206820e-08 2.052030e-08
Cs-149 Pu-241 Fast 2.344960e-08 1.500780e-08
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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