37-Rb-99
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)
98.945028735 ± 0.000120023 (amu) [mass excess = -51205.403 ± 111.802 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
11306.539 ± 111.760 (keV)
Strong Gamma-rays from Decay of Rb- 99 (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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144.6 8.59 B-,N
289.4 2.58 B-,N
1079.8 0.86 B-,N
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90.8 *100. B-
125.2 * 40. B-
1071.6 * 26. 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- 54 MS 4
B-N 50.3 MS 7
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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Rb- 99 U-235 Thermal 4.668320e-07 2.987720e-07
Rb- 99 U-235 Fast 9.087730e-07 5.816140e-07
Rb- 99 U-235 High 3.380180e-06 2.163310e-06
Rb- 99 U-238 Fast 1.692690e-04 1.083320e-04
Rb- 99 U-238 High 1.435890e-04 9.189650e-05
Rb- 99 Pu-239 Thermal 3.666120e-07 2.346320e-07
Rb- 99 Pu-239 Fast 4.650090e-07 2.976060e-07
Rb- 99 Pu-239 High 2.319720e-06 1.484620e-06
Rb- 99 Pu-241 Thermal 9.463690e-07 6.056760e-07
Rb- 99 Pu-241 Fast 1.556760e-06 9.963240e-07
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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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Rb- 99 U-235 Thermal 4.668440e-07 2.987810e-07
Rb- 99 U-235 Fast 9.088020e-07 5.816340e-07
Rb- 99 U-235 High 3.381600e-06 2.161020e-06
Rb- 99 U-238 Fast 1.694630e-04 1.084160e-04
Rb- 99 U-238 High 1.439820e-04 9.204820e-05
Rb- 99 Pu-239 Thermal 3.666380e-07 2.346480e-07
Rb- 99 Pu-239 Fast 4.650450e-07 2.976290e-07
Rb- 99 Pu-239 High 2.321860e-06 1.485030e-06
Rb- 99 Pu-241 Thermal 9.464030e-07 6.055990e-07
Rb- 99 Pu-241 Fast 1.556830e-06 9.963700e-07
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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