33-As-77
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)
76.920647563 ± 0.000001842 (amu) [mass excess = -73916.319 ± 1.716 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
683.166 ± 1.716 (keV)
Strong Gamma-rays from Decay of As- 77 (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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239.01 1.59 B-
249.81 0.39 B-
520.65 0.56 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- 38.83 H 5
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Se- 77 (Z= 34, A= 77), MT=103 (n,p)
Se- 78 (Z= 34, A= 78), MT= 28 (n,np)
Se- 78 (Z= 34, A= 78), MT=104 (n,d)
Se- 79 (Z= 34, A= 79), MT= 32 (n,nd)
Se- 79 (Z= 34, A= 79), MT=105 (n,t)
Br- 79 (Z= 35, A= 79), MT=106 (n,3He)
Br- 81 (Z= 35, A= 81), MT= 22 (n,nα)
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- 77 U-235 Thermal 4.303150e-08 2.754020e-08
As- 77 U-235 Fast 1.896080e-07 1.213500e-07
As- 77 U-235 High 3.685050e-06 2.358430e-06
As- 77 U-238 Fast 4.351620e-09 2.785040e-09
As- 77 U-238 High 5.255720e-07 3.363660e-07
As- 77 Pu-239 Thermal 9.888440e-07 6.328600e-07
As- 77 Pu-239 Fast 9.438470e-07 6.040620e-07
As- 77 Pu-239 High 4.132680e-06 2.644920e-06
As- 77 Pu-241 Thermal 9.611550e-08 6.151400e-08
As- 77 Pu-241 Fast 1.528850e-07 9.784640e-08
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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- 77 U-235 Thermal 7.947630e-05 8.757420e-06
As- 77 U-235 Fast 3.174370e-04 7.316060e-05
As- 77 U-235 High 6.668490e-04 1.065420e-04
As- 77 U-238 Fast 3.303440e-05 5.281690e-06
As- 77 U-238 High 3.132800e-04 3.442420e-05
As- 77 Pu-239 Thermal 7.233230e-05 7.958420e-06
As- 77 Pu-239 Fast 1.269110e-04 1.015340e-05
As- 77 Pu-239 High 2.371470e-04 5.451020e-05
As- 77 Pu-241 Thermal 1.895050e-05 6.067210e-06
As- 77 Pu-241 Fast 9.686170e-05 2.229400e-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