57-La-138
Spin
Level energy(keV) Spin & Parity
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ground state 5+
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)
137.907114919 ± 0.000003684 (amu) [mass excess = -86521.895 ± 3.432 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
1046.841 ± 10.166 (keV)
Strong Gamma-rays from Decay of La-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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788.74 34.4 B-
1435.80 65.6 EC
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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- 1.02E+11 Y 1
EC 1.02E+11 Y 1
Cross Sections (taken from JENDL-4.0)
Table of cross sections, La-138.
Figures of cross sections, La-138: 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
La-138 (Z= 57, A=138), MT= 2 (Elastic scattering)
La-138 (Z= 57, A=138), MT= 4 (Inelastic scattering)
La-139 (Z= 57, A=139), MT= 16 (n,2n)
La-140 (Z= 57, A=140), MT= 17 (n,3n)
Ce-140 (Z= 58, A=140), MT= 32 (n,nd)
Ce-140 (Z= 58, A=140), MT=105 (n,t)
Pr-141 (Z= 59, A=141), 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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La-138 U-235 Thermal 3.174950e-07 2.031970e-07
La-138 U-235 Fast 9.749880e-08 6.239920e-08
La-138 U-235 High 7.400140e-06 4.736090e-06
La-138 U-238 Fast 1.760660e-10 1.126820e-10
La-138 U-238 High 4.344730e-08 2.780630e-08
La-138 Pu-239 Thermal 6.159030e-07 3.941780e-07
La-138 Pu-239 Fast 5.389130e-07 3.449040e-07
La-138 Pu-239 High 6.283070e-05 4.021170e-05
La-138 Pu-241 Thermal 7.521210e-09 4.813580e-09
La-138 Pu-241 Fast 7.414420e-09 4.745230e-09
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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-138 U-235 Thermal 3.174950e-07 1.272830e-08
La-138 U-235 Fast 9.749880e-08 3.913110e-09
La-138 U-235 High 7.400140e-06 4.729070e-06
La-138 U-238 Fast 1.760660e-10 1.126410e-10
La-138 U-238 High 4.344730e-08 2.777610e-08
La-138 Pu-239 Thermal 6.159030e-07 3.941780e-07
La-138 Pu-239 Fast 5.389130e-07 3.449040e-07
La-138 Pu-239 High 6.283070e-05 4.018560e-05
La-138 Pu-241 Thermal 7.521210e-09 4.812800e-09
La-138 Pu-241 Fast 7.414420e-09 4.745230e-09
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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