36-Kr-81
Spin
Level energy(keV) Spin & Parity
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ground state 7/2+
1.90640E+02 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)
80.916591181 ± 0.000001451 (amu) [mass excess = -77694.814 ± 1.352 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-2238.151 ± 5.084 (keV)
Strong Gamma-rays from Decay of Kr- 81 (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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275.99 0.3 EC
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190.46 67.7 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
EC 13.10 S 3
EC 2.29E5 Y 11
IT 13.10 S 3
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Kr- 80 (Z= 36, A= 80), MT=102 (n,γ)
Kr- 82 (Z= 36, A= 82), MT= 16 (n,2n)
Kr- 83 (Z= 36, A= 83), MT= 17 (n,3n)
Sr- 84 (Z= 38, A= 84), 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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Kr- 81 U-235 Thermal 9.383330e-12 6.005330e-12
Kr- 81 U-235 Fast 5.511700e-12 3.527490e-12
Kr- 81 U-235 High 3.676730e-09 2.353110e-09
Kr- 81 U-238 Fast 1.112620e-13 7.120750e-14
Kr- 81 U-238 High 1.390630e-10 8.900020e-11
Kr- 81 Pu-239 Thermal 2.052730e-09 1.313750e-09
Kr- 81 Pu-239 Fast 4.449850e-10 2.847910e-10
Kr- 81 Pu-239 High 1.827800e-08 1.169790e-08
Kr- 81 Pu-241 Thermal 2.800000e-11 1.792000e-11
Kr- 81 Pu-241 Fast 8.311010e-12 5.319050e-12
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Kr- 81m U-235 Thermal 1.439430e-12 9.212330e-13
Kr- 81m U-235 Fast 7.373930e-13 4.719320e-13
Kr- 81m U-235 High 3.067260e-10 1.963050e-10
Kr- 81m U-238 Fast 1.488540e-14 9.526640e-15
Kr- 81m U-238 High 1.160120e-11 7.424780e-12
Kr- 81m Pu-239 Thermal 3.148940e-10 2.015330e-10
Kr- 81m Pu-239 Fast 5.953310e-11 3.810120e-11
Kr- 81m Pu-239 High 1.524820e-09 9.758840e-10
Kr- 81m Pu-241 Thermal 4.295270e-12 2.748970e-12
Kr- 81m Pu-241 Fast 1.111900e-12 7.116180e-13
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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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Kr- 81 U-235 Thermal 1.082270e-11 6.891430e-12
Kr- 81 U-235 Fast 6.249080e-12 3.999410e-12
Kr- 81 U-235 High 3.983460e-09 2.529000e-09
Kr- 81 U-238 Fast 1.261470e-13 8.073390e-14
Kr- 81 U-238 High 1.506640e-10 9.531980e-11
Kr- 81 Pu-239 Thermal 2.367620e-09 1.512340e-09
Kr- 81 Pu-239 Fast 5.045170e-10 3.228910e-10
Kr- 81 Pu-239 High 1.980290e-08 1.258710e-08
Kr- 81 Pu-241 Thermal 3.229510e-11 2.054200e-11
Kr- 81 Pu-241 Fast 9.422890e-12 6.030650e-12
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Kr- 81m U-235 Thermal 1.439430e-12 9.212330e-13
Kr- 81m U-235 Fast 7.373930e-13 4.719320e-13
Kr- 81m U-235 High 3.067360e-10 1.963110e-10
Kr- 81m U-238 Fast 1.488540e-14 9.523150e-15
Kr- 81m U-238 High 1.160120e-11 7.416730e-12
Kr- 81m Pu-239 Thermal 3.148970e-10 2.015350e-10
Kr- 81m Pu-239 Fast 5.953310e-11 3.810120e-11
Kr- 81m Pu-239 High 1.524950e-09 9.752520e-10
Kr- 81m Pu-241 Thermal 4.295270e-12 2.748520e-12
Kr- 81m Pu-241 Fast 1.111900e-12 7.116180e-13
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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