57-La-146
Spin
Level energy(keV) Spin & Parity
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ground state 2-
ground state(+X) (6-)
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)
145.925875174 ± 0.000036014 (amu) [mass excess = -69046.831 ± 33.547 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
6588.235 ± 34.401 (keV)
Strong Gamma-rays from Decay of La-146 (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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258.42 94.95 B-
409.78 75. B-
514.65 23.77 B-
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258.47 63.7 B-
702.28 6.43 B-
924.58 7.45 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- 10.0 S 1
B- 6.27 S 10
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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La-146 U-235 Thermal 5.310800e-03 3.398910e-03
La-146 U-235 Fast 4.282130e-03 2.740560e-03
La-146 U-235 High 2.407990e-03 1.541110e-03
La-146 U-238 Fast 4.108190e-03 2.629240e-03
La-146 U-238 High 2.916580e-03 1.866610e-03
La-146 Pu-239 Thermal 4.145400e-03 2.653060e-03
La-146 Pu-239 Fast 3.625060e-03 2.320040e-03
La-146 Pu-239 High 1.231960e-03 7.884510e-04
La-146 Pu-241 Thermal 5.522490e-03 3.534390e-03
La-146 Pu-241 Fast 4.765610e-03 3.049990e-03
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La-146m U-235 Thermal 9.565390e-03 6.121840e-03
La-146m U-235 Fast 8.975240e-03 5.744150e-03
La-146m U-235 High 8.438810e-03 5.400830e-03
La-146m U-238 Fast 8.610650e-03 5.510820e-03
La-146m U-238 High 1.022120e-02 6.541530e-03
La-146m Pu-239 Thermal 7.466370e-03 4.778480e-03
La-146m Pu-239 Fast 7.598040e-03 4.862740e-03
La-146m Pu-239 High 4.317400e-03 2.763130e-03
La-146m Pu-241 Thermal 9.946680e-03 6.365870e-03
La-146m Pu-241 Fast 9.988610e-03 6.392710e-03
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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-146 U-235 Thermal 1.451100e-02 9.287050e-03
La-146 U-235 Fast 1.591130e-02 1.018320e-02
La-146 U-235 High 4.220330e-03 2.696640e-03
La-146 U-238 Fast 2.504620e-02 1.598500e-02
La-146 U-238 High 1.199370e-02 7.639550e-03
La-146 Pu-239 Thermal 6.539490e-03 4.185270e-03
La-146 Pu-239 Fast 5.881190e-03 3.763960e-03
La-146 Pu-239 High 1.731730e-03 1.107420e-03
La-146 Pu-241 Thermal 1.478660e-02 9.451510e-03
La-146 Pu-241 Fast 1.357900e-02 8.689280e-03
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La-146m U-235 Thermal 9.565390e-03 6.121840e-03
La-146m U-235 Fast 8.975240e-03 5.744150e-03
La-146m U-235 High 8.438810e-03 5.392830e-03
La-146m U-238 Fast 8.610650e-03 5.508800e-03
La-146m U-238 High 1.022120e-02 6.534450e-03
La-146m Pu-239 Thermal 7.466370e-03 4.778480e-03
La-146m Pu-239 Fast 7.598040e-03 4.862740e-03
La-146m Pu-239 High 4.317400e-03 2.761340e-03
La-146m Pu-241 Thermal 9.946680e-03 6.364840e-03
La-146m Pu-241 Fast 9.988610e-03 6.392710e-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