64-Gd-159
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)
158.926396969 ± 0.000001744 (amu) [mass excess = -68560.782 ± 1.625 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
970.858 ± 0.765 (keV)
Strong Gamma-rays from Decay of Gd-159 (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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58.00 2.49 B-
348.28 0.24 B-
363.54 11.78 B-
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17.1 4.7 IT
50.7 2.35 IT
67.8 35.8 IT
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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- 18.479 H 4
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Gd-158 (Z= 64, A=158), MT=102 (n,γ)
Gd-160 (Z= 64, A=160), MT= 16 (n,2n)
Tb-159 (Z= 65, A=159), MT=103 (n,p)
Tb-160 (Z= 65, A=160), MT= 28 (n,np)
Tb-160 (Z= 65, A=160), MT=104 (n,d)
Dy-161 (Z= 66, A=161), MT=106 (n,3He)
Dy-162 (Z= 66, A=162), MT=107 (n,α)
Dy-163 (Z= 66, A=163), MT= 22 (n,nα)
Dy-164 (Z= 66, A=164), MT= 24 (n,2nα)
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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Gd-159 U-235 Thermal 3.704100e-08 2.370620e-08
Gd-159 U-235 Fast 4.470770e-08 2.861300e-08
Gd-159 U-235 High 1.101510e-05 7.049660e-06
Gd-159 U-238 Fast 9.063380e-09 5.800560e-09
Gd-159 U-238 High 5.125580e-07 3.280370e-07
Gd-159 Pu-239 Thermal 4.529280e-06 2.898740e-06
Gd-159 Pu-239 Fast 1.216800e-05 7.787540e-06
Gd-159 Pu-239 High 1.349680e-04 8.637920e-05
Gd-159 Pu-241 Thermal 3.710600e-07 2.374780e-07
Gd-159 Pu-241 Fast 1.828620e-06 1.170320e-06
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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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Gd-159 U-235 Thermal 1.007880e-05 6.054490e-07
Gd-159 U-235 Fast 3.000990e-05 4.811530e-06
Gd-159 U-235 High 1.211960e-04 1.331400e-05
Gd-159 U-238 Fast 8.622300e-05 1.379050e-05
Gd-159 U-238 High 2.604610e-04 2.862130e-05
Gd-159 Pu-239 Thermal 2.064870e-04 1.239100e-05
Gd-159 Pu-239 Fast 3.853680e-04 8.864730e-05
Gd-159 Pu-239 High 5.164980e-04 8.258790e-05
Gd-159 Pu-241 Thermal 4.803750e-04 1.921210e-05
Gd-159 Pu-241 Fast 6.508330e-04 2.084270e-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