33-As-74
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)
73.923928598 ± 0.000001817 (amu) [mass excess = -70860.055 ± 1.693 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
1353.147 ± 1.693 (keV)
Strong Gamma-rays from Decay of As- 74 (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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595.83 59.4 EC
608.43 0.55 EC
1204.35 0.29 EC
634.78 15.35 B-
635. ~ 0.04 B-
1269.6 2.E-03 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- 17.77 D 2
EC 17.77 D 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
As- 75 (Z= 33, A= 75), MT= 16 (n,2n)
Se- 74 (Z= 34, A= 74), MT=103 (n,p)
Se- 76 (Z= 34, A= 76), MT= 32 (n,nd)
Se- 76 (Z= 34, A= 76), MT=105 (n,t)
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- 74 U-235 Thermal 1.656360e-13 8.068920e-14
As- 74 U-235 Fast 4.031670e-13 2.008610e-13
As- 74 U-235 High 1.058450e-09 5.688270e-10
As- 74 U-238 Fast 1.530570e-14 9.795650e-15
As- 74 U-238 High 7.458130e-11 4.007700e-11
As- 74 Pu-239 Thermal 6.758930e-11 3.293690e-11
As- 74 Pu-239 Fast 5.599090e-11 2.789840e-11
As- 74 Pu-239 High 3.868510e-09 2.078470e-09
As- 74 Pu-241 Thermal 1.884310e-12 9.188310e-13
As- 74 Pu-241 Fast 2.599050e-12 1.295150e-12
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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- 74 U-235 Thermal 1.656360e-13 1.060070e-13
As- 74 U-235 Fast 4.031670e-13 2.580270e-13
As- 74 U-235 High 1.058450e-09 6.774080e-10
As- 74 U-238 Fast 1.530570e-14 9.795680e-15
As- 74 U-238 High 7.458130e-11 4.768030e-11
As- 74 Pu-239 Thermal 6.758930e-11 4.325720e-11
As- 74 Pu-239 Fast 5.599090e-11 3.583420e-11
As- 74 Pu-239 High 3.868510e-09 2.475850e-09
As- 74 Pu-241 Thermal 1.884310e-12 1.203210e-12
As- 74 Pu-241 Fast 2.599050e-12 1.663390e-12
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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