66-Dy-157
Spin
Level energy(keV) Spin & Parity
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ground state 3/2-
1.99500E+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)
156.925470660 ± 0.000005744 (amu) [mass excess = -69423.633 ± 5.351 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-2593.062 ± 23.799 (keV)
Strong Gamma-rays from Decay of Dy-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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37.3 23. IT
61.0 6.9 IT
87.0 20.93 IT
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83.04 0.26 EC
182.42 1.33 EC
326.34 93. 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 8.14 H 4
IT 21.6 MS 16
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Dy-156 (Z= 66, A=156), MT=102 (n,γ)
Dy-158 (Z= 66, A=158), MT= 16 (n,2n)
Dy-159 (Z= 66, A=159), MT= 17 (n,3n)
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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Dy-157 U-235 High 2.323190e-12 1.486840e-12
Dy-157 Pu-239 High 8.565550e-10 5.481950e-10
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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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Dy-157 U-235 High 2.323190e-12 1.484630e-12
Dy-157 Pu-239 High 8.565550e-10 5.478400e-10
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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