61-Pm-157
Spin
Level energy(keV) Spin & Parity
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ground state (5/2-)
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)
156.933121393 ± 0.000007521 (amu) [mass excess = -62297.021 ± 7.006 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
4380.533 ± 8.265 (keV)
Strong Gamma-rays from Decay of Pm-157 (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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160.61 25. B-
188.05 9.68 B-
571.27 3.85 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- 10.56 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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Pm-157 U-235 Thermal 2.929330e-05 1.874780e-05
Pm-157 U-235 Fast 5.743140e-05 3.675610e-05
Pm-157 U-235 High 9.626190e-05 6.160760e-05
Pm-157 U-238 Fast 2.160800e-04 1.382920e-04
Pm-157 U-238 High 4.758280e-04 3.045300e-04
Pm-157 Pu-239 Thermal 2.740470e-04 1.753900e-04
Pm-157 Pu-239 Fast 3.360050e-04 2.150440e-04
Pm-157 Pu-239 High 1.220490e-04 7.811150e-05
Pm-157 Pu-241 Thermal 8.055000e-04 5.155200e-04
Pm-157 Pu-241 Fast 8.855440e-04 5.667480e-04
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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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Pm-157 U-235 Thermal 3.415210e-05 2.185740e-05
Pm-157 U-235 Fast 7.354930e-05 4.707150e-05
Pm-157 U-235 High 1.016000e-04 6.492720e-05
Pm-157 U-238 Fast 3.840950e-04 2.457360e-04
Pm-157 U-238 High 6.377480e-04 4.077210e-04
Pm-157 Pu-239 Thermal 2.959360e-04 1.893990e-04
Pm-157 Pu-239 Fast 3.588900e-04 2.296890e-04
Pm-157 Pu-239 High 1.256540e-04 8.036480e-05
Pm-157 Pu-241 Thermal 1.060200e-03 4.770130e-04
Pm-157 Pu-241 Fast 1.069560e-03 6.845160e-04
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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