57-La-137
Spin
Level energy(keV) Spin & Parity
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ground state 7/2+
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)
136.906450385 ± 0.000001774 (amu) [mass excess = -87140.904 ± 1.653 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-1222.100 ± 1.600 (keV)
Decay data(Chart of the Nuclides 2014)
Decay mode Half-life
EC 6E+4 Y 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
La-138 (Z= 57, A=138), MT= 16 (n,2n)
La-139 (Z= 57, A=139), MT= 17 (n,3n)
Pr-141 (Z= 59, A=141), MT= 22 (n,nα)
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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La-137 U-235 Thermal 6.918980e-11 4.428150e-11
La-137 U-235 Fast 2.624580e-11 1.679740e-11
La-137 U-235 High 6.629090e-07 4.242620e-07
La-137 U-238 Fast 2.450920e-12 1.568580e-12
La-137 U-238 High 2.212410e-09 1.415950e-09
La-137 Pu-239 Thermal 2.819560e-08 1.804520e-08
La-137 Pu-239 Fast 2.179650e-08 1.394980e-08
La-137 Pu-239 High 8.555550e-06 5.475550e-06
La-137 Pu-241 Thermal 1.400230e-10 8.961440e-11
La-137 Pu-241 Fast 1.878590e-10 1.202300e-10
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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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La-137 U-235 Thermal 6.918980e-11 4.428150e-11
La-137 U-235 Fast 2.624580e-11 1.679740e-11
La-137 U-235 High 6.629150e-07 4.236330e-07
La-137 U-238 Fast 2.450920e-12 1.568010e-12
La-137 U-238 High 2.212410e-09 1.414410e-09
La-137 Pu-239 Thermal 2.819570e-08 1.804520e-08
La-137 Pu-239 Fast 2.179650e-08 1.394980e-08
La-137 Pu-239 High 8.562520e-06 5.478400e-06
La-137 Pu-241 Thermal 1.400230e-10 8.959990e-11
La-137 Pu-241 Fast 1.878590e-10 1.202300e-10
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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