33-As-78
Spin
Level energy(keV) Spin & Parity
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ground state 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)
77.921827773 ± 0.000010534 (amu) [mass excess = -72816.961 ± 9.813 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
4208.949 ± 9.813 (keV)
Strong Gamma-rays from Decay of As- 78 (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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613.8 54. B-
694.9 16.74 B-
1308.7 12.96 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- 90.7 M 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Se- 78 (Z= 34, A= 78), MT=103 (n,p)
Se- 79 (Z= 34, A= 79), MT= 28 (n,np)
Se- 79 (Z= 34, A= 79), MT=104 (n,d)
Se- 80 (Z= 34, A= 80), MT=105 (n,t)
Br- 81 (Z= 35, A= 81), 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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As- 78 U-235 Thermal 1.297940e-06 2.985250e-07
As- 78 U-235 Fast 2.844130e-06 1.820240e-06
As- 78 U-235 High 2.784810e-05 1.782280e-05
As- 78 U-238 Fast 1.540570e-07 9.859670e-08
As- 78 U-238 High 6.026570e-06 3.857000e-06
As- 78 Pu-239 Thermal 9.878450e-06 6.322200e-06
As- 78 Pu-239 Fast 7.648770e-06 4.895200e-06
As- 78 Pu-239 High 2.546650e-05 1.629860e-05
As- 78 Pu-241 Thermal 3.230520e-06 2.067540e-06
As- 78 Pu-241 Fast 1.868590e-06 1.195900e-06
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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- 78 U-235 Thermal 2.093470e-04 2.306290e-05
As- 78 U-235 Fast 5.700480e-04 1.313730e-04
As- 78 U-235 High 9.987330e-04 2.293510e-04
As- 78 U-238 Fast 1.123010e-04 3.591070e-05
As- 78 U-238 High 5.720280e-04 1.828180e-04
As- 78 Pu-239 Thermal 1.876220e-04 8.443700e-05
As- 78 Pu-239 Fast 2.291920e-04 1.031470e-04
As- 78 Pu-239 High 4.149340e-04 1.326820e-04
As- 78 Pu-241 Thermal 1.152080e-04 1.842880e-05
As- 78 Pu-241 Fast 1.840320e-04 5.893130e-05
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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