68-Er-171
Spin
Level energy(keV) Spin & Parity
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ground state 5/2-
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)
170.938035681 ± 0.000002568 (amu) [mass excess = -57719.391 ± 2.392 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
1492.076 ± 1.276 (keV)
Strong Gamma-rays from Decay of Er-171 (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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111.62 20.5 B-
295.90 28.9 B-
308.29 64.4 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- 7.516 H 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Er-170 (Z= 68, A=170), MT=102 (n,γ)
Yb-173 (Z= 70, A=173), MT=106 (n,3He)
Yb-174 (Z= 70, A=174), 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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Er-171 U-235 Thermal 1.577490e-12 1.009590e-12
Er-171 U-235 Fast 1.876120e-12 1.200720e-12
Er-171 U-235 High 5.257210e-08 3.364610e-08
Er-171 U-238 Fast 1.260470e-10 8.067010e-11
Er-171 U-238 High 4.705120e-09 3.011280e-09
Er-171 Pu-239 Thermal 2.269640e-10 1.452570e-10
Er-171 Pu-239 Fast 5.429120e-09 3.474640e-09
Er-171 Pu-239 High 1.821180e-07 1.165560e-07
Er-171 Pu-241 Thermal 1.950320e-11 1.248200e-11
Er-171 Pu-241 Fast 2.158380e-09 1.381360e-09
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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-171 U-235 Thermal 2.343550e-11 1.057450e-11
Er-171 U-235 Fast 6.713370e-11 3.028520e-11
Er-171 U-235 High 1.729820e-07 7.784120e-08
Er-171 U-238 Fast 5.716900e-08 1.830410e-08
Er-171 U-238 High 3.305780e-07 1.485020e-07
Er-171 Pu-239 Thermal 1.567980e-09 7.064940e-10
Er-171 Pu-239 Fast 2.569110e-08 1.156480e-08
Er-171 Pu-239 High 3.284090e-07 2.099200e-07
Er-171 Pu-241 Thermal 2.192980e-09 9.855040e-10
Er-171 Pu-241 Fast 5.785630e-08 2.610040e-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