33-As-79
Spin
Level energy(keV) Spin & Parity
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ground state 3/2-
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)
78.920948423 ± 0.000005782 (amu) [mass excess = -73636.069 ± 5.386 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
2281.356 ± 5.389 (keV)
Strong Gamma-rays from Decay of As- 79 (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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231. -- IT
542. -- IT
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95.5 9.28 B-
364.5 1.86 B-
432.0 1.49 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- 9.01 M 15
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Se- 79 (Z= 34, A= 79), MT=103 (n,p)
Se- 80 (Z= 34, A= 80), MT= 28 (n,np)
Se- 80 (Z= 34, A= 80), MT=104 (n,d)
Br- 81 (Z= 35, A= 81), MT=106 (n,3He)
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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As- 79 U-235 Thermal 2.652770e-05 1.193750e-05
As- 79 U-235 Fast 2.845130e-05 1.820880e-05
As- 79 U-235 High 1.654870e-04 1.059110e-04
As- 79 U-238 Fast 3.451280e-06 2.208820e-06
As- 79 U-238 High 6.178730e-05 3.954390e-05
As- 79 Pu-239 Thermal 8.013740e-05 5.128800e-05
As- 79 Pu-239 Fast 7.659760e-05 4.902240e-05
As- 79 Pu-239 High 1.391400e-04 8.904970e-05
As- 79 Pu-241 Thermal 1.534250e-05 9.819180e-06
As- 79 Pu-241 Fast 1.831620e-05 1.172240e-05
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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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As- 79 U-235 Thermal 4.465870e-04 3.577730e-05
As- 79 U-235 Fast 9.067840e-04 4.087880e-04
As- 79 U-235 High 1.678770e-03 7.540850e-04
As- 79 U-238 Fast 3.272010e-04 1.470300e-04
As- 79 U-238 High 1.334570e-03 5.995190e-04
As- 79 Pu-239 Thermal 4.341660e-04 6.947430e-05
As- 79 Pu-239 Fast 6.059960e-04 2.727220e-04
As- 79 Pu-239 High 8.578150e-04 3.856510e-04
As- 79 Pu-241 Thermal 1.494180e-04 6.722540e-05
As- 79 Pu-241 Fast 3.583000e-04 1.613210e-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