54-Xe-138
Spin
Level energy(keV) Spin & Parity
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ground state 0+
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)
137.914146273 ± 0.000003010 (amu) [mass excess = -79972.231 ± 2.804 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
2914.817 ± 9.578 (keV)
Strong Gamma-rays from Decay of Xe-138 (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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258.41 31.5 B-
434.56 20.32 B-
1768.26 16.73 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- 14.08 M 8
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
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-138 U-235 Thermal 4.806820e-02 1.345910e-03
Xe-138 U-235 Fast 4.673470e-02 1.308570e-03
Xe-138 U-235 High 2.649380e-02 2.914310e-03
Xe-138 U-238 Fast 2.040730e-02 6.530310e-03
Xe-138 U-238 High 1.847370e-02 1.108420e-03
Xe-138 Pu-239 Thermal 3.925110e-02 1.099030e-03
Xe-138 Pu-239 Fast 3.701980e-02 1.480790e-03
Xe-138 Pu-239 High 1.709880e-02 4.787660e-04
Xe-138 Pu-241 Thermal 4.061230e-02 2.436730e-03
Xe-138 Pu-241 Fast 4.010490e-02 1.283350e-02
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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-138 U-235 Thermal 6.286110e-02 8.880790e-04
Xe-138 U-235 Fast 5.995540e-02 8.525110e-04
Xe-138 U-235 High 3.167160e-02 8.866230e-04
Xe-138 U-238 Fast 5.698010e-02 1.597040e-03
Xe-138 U-238 High 4.532700e-02 9.063570e-04
Xe-138 Pu-239 Thermal 5.168730e-02 7.241870e-04
Xe-138 Pu-239 Fast 4.710270e-02 9.425790e-04
Xe-138 Pu-239 High 1.816470e-02 3.632390e-04
Xe-138 Pu-241 Thermal 6.256690e-02 1.752330e-03
Xe-138 Pu-241 Fast 5.810750e-02 9.307400e-03
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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