68-Er-169
Spin
Level energy(keV) Spin & Parity
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ground state 1/2-
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)
168.934596850 ± 0.000002188 (amu) [mass excess = -60922.642 ± 2.039 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
352.999 ± 1.150 (keV)
Strong Gamma-rays from Decay of Er-169 (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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8.41 0.17 B-
109.78 1.E-03 B-
118.19 1.E-04 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- 9.392 D 18
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Er-168 (Z= 68, A=168), MT=102 (n,γ)
Er-170 (Z= 68, A=170), MT= 16 (n,2n)
Tm-169 (Z= 69, A=169), MT=103 (n,p)
Yb-171 (Z= 70, A=171), MT=106 (n,3He)
Yb-172 (Z= 70, A=172), MT=107 (n,α)
Yb-173 (Z= 70, A=173), MT= 22 (n,nα)
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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Er-169 U-235 Thermal 3.264800e-13 2.089470e-13
Er-169 U-235 Fast 2.255340e-13 1.443420e-13
Er-169 U-235 High 3.765160e-08 2.409710e-08
Er-169 U-238 Fast 2.370890e-12 1.517370e-12
Er-169 U-238 High 4.424820e-10 2.831880e-10
Er-169 Pu-239 Thermal 1.109830e-10 7.102880e-11
Er-169 Pu-239 Fast 3.539430e-09 2.265230e-09
Er-169 Pu-239 High 1.150750e-07 7.364780e-08
Er-169 Pu-241 Thermal 3.810620e-12 2.438800e-12
Er-169 Pu-241 Fast 4.526600e-10 2.897020e-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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Er-169 U-235 Thermal 2.381390e-10 1.070920e-10
Er-169 U-235 Fast 5.757200e-10 1.846420e-10
Er-169 U-235 High 7.808870e-07 6.240050e-08
Er-169 U-238 Fast 1.701910e-07 7.650070e-08
Er-169 U-238 High 1.294080e-06 1.032800e-07
Er-169 Pu-239 Thermal 1.473160e-08 6.615000e-09
Er-169 Pu-239 Fast 2.581980e-07 1.160980e-07
Er-169 Pu-239 High 6.371030e-07 2.035230e-07
Er-169 Pu-241 Thermal 4.025110e-08 1.809010e-08
Er-169 Pu-241 Fast 5.901510e-07 2.655000e-07
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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