62-Sm-157
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)
156.928418698 ± 0.000004759 (amu) [mass excess = -66677.553 ± 4.434 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
2780.744 ± 6.179 (keV)
Strong Gamma-rays from Decay of Sm-157 (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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196.46 16.63 B-
197.87 56. B-
394.35 11.93 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- 482 S 4
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Eu-157 (Z= 63, A=157), MT=103 (n,p)
Gd-160 (Z= 64, A=160), MT=107 (n,α)
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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Sm-157 U-235 Thermal 2.662760e-05 1.704170e-05
Sm-157 U-235 Fast 3.158480e-05 2.021420e-05
Sm-157 U-235 High 2.125510e-04 1.360330e-04
Sm-157 U-238 Fast 2.961100e-05 1.895100e-05
Sm-157 U-238 High 1.611760e-04 1.031520e-04
Sm-157 Pu-239 Thermal 4.105950e-04 2.627810e-04
Sm-157 Pu-239 Fast 6.380870e-04 4.083750e-04
Sm-157 Pu-239 High 5.686590e-04 3.639420e-04
Sm-157 Pu-241 Thermal 2.894670e-04 1.852590e-04
Sm-157 Pu-241 Fast 5.433910e-04 3.477700e-04
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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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Sm-157 U-235 Thermal 6.077970e-05 9.738890e-06
Sm-157 U-235 Fast 1.051340e-04 4.740760e-05
Sm-157 U-235 High 3.141510e-04 1.411590e-04
Sm-157 U-238 Fast 4.137060e-04 1.861030e-04
Sm-157 U-238 High 7.989240e-04 2.553810e-04
Sm-157 Pu-239 Thermal 7.065310e-04 1.130630e-04
Sm-157 Pu-239 Fast 9.969770e-04 2.293380e-04
Sm-157 Pu-239 High 6.943130e-04 4.440700e-04
Sm-157 Pu-241 Thermal 1.349670e-03 1.079570e-04
Sm-157 Pu-241 Fast 1.612950e-03 7.263730e-04
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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