54-Xe-129
Spin
Level energy(keV) Spin & Parity
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ground state 1/2+
2.36140E+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)
128.90478086113 ± 0.00000000596 (amu) [mass excess = -88696.05676 ± 0.00555 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-1196.805 ± 4.555 (keV)
Strong Gamma-rays from Decay of Xe-129 (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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39.58 7.5 IT
196.56 4.59 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
IT 8.88 D 2
Cross Sections (taken from JENDL-4.0)
Table of cross sections, Xe-129.
Figures of cross sections, Xe-129: type-1: type-2: type-3.
type-1: total, elastic and inelastic scattering, capture and fision cross sections
type-2: same as type-1 but cross sections are averaged in 70 energy group intervals
type-3: threshold reaction cross sections
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Xe-128 (Z= 54, A=128), MT=102 (n,γ)
Xe-129 (Z= 54, A=129), MT= 2 (Elastic scattering)
Xe-129 (Z= 54, A=129), MT= 4 (Inelastic scattering)
Xe-130 (Z= 54, A=130), MT= 16 (n,2n)
Xe-131 (Z= 54, A=131), MT= 17 (n,3n)
Ba-130 (Z= 56, A=130), MT=111 (n,2p)
Ba-132 (Z= 56, A=132), 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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Xe-129 U-235 High 7.655500e-09 4.899510e-09
Xe-129 U-238 High 3.798850e-11 2.431260e-11
Xe-129 Pu-239 High 1.891630e-07 1.210640e-07
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Xe-129m U-235 High 4.742000e-08 3.034880e-08
Xe-129m U-238 High 2.353100e-10 1.505980e-10
Xe-129m Pu-239 High 1.171720e-06 7.499010e-07
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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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Xe-129 U-235 Thermal 5.432070e-03 1.414680e-06
Xe-129 U-235 Fast 8.359600e-03 7.973980e-06
Xe-129 U-235 High 2.997060e-02 1.918110e-02
Xe-129 U-238 Fast 1.007730e-02 3.607380e-05
Xe-129 U-238 High 1.949470e-02 1.247660e-02
Xe-129 Pu-239 Thermal 1.321300e-02 5.013640e-04
Xe-129 Pu-239 Fast 1.405450e-02 4.558570e-04
Xe-129 Pu-239 High 2.941010e-02 1.882250e-02
Xe-129 Pu-241 Thermal 8.029930e-03 1.695850e-04
Xe-129 Pu-241 Fast 1.139130e-02 2.802370e-04
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Xe-129m U-235 High 4.742000e-08 3.030380e-08
Xe-129m U-238 High 2.353100e-10 1.504350e-10
Xe-129m Pu-239 High 1.171720e-06 7.494150e-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