53-I-128
Spin
Level energy(keV) Spin & Parity
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ground state 1+
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)
127.905808615 ± 0.000003915 (amu) [mass excess = -87738.709 ± 3.648 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
2121.568 ± 3.748 (keV)
Strong Gamma-rays from Decay of I-128 (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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442.90 12.62 B-
526.56 1.2 B-
969.46 0.3 B-
743.5 0.12 EC
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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- 24.99 M 2
EC 24.99 M 2
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
I -127 (Z= 53, A=127), MT=102 (n,γ)
I -129 (Z= 53, A=129), MT= 16 (n,2n)
I -130 (Z= 53, A=130), MT= 17 (n,3n)
Xe-128 (Z= 54, A=128), MT=103 (n,p)
Xe-129 (Z= 54, A=129), MT= 28 (n,np)
Xe-129 (Z= 54, A=129), MT=104 (n,d)
Xe-130 (Z= 54, A=130), MT= 32 (n,nd)
Xe-130 (Z= 54, A=130), MT=105 (n,t)
Cs-133 (Z= 55, A=133), MT= 24 (n,2nα)
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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I-128 U-235 Thermal 1.038350e-08 6.645420e-09
I-128 U-235 High 3.624970e-06 2.319980e-06
I-128 U-238 High 9.490330e-08 6.073820e-08
I-128 Pu-239 Thermal 9.178560e-07 5.874280e-07
I-128 Pu-239 Fast 3.469440e-14 2.220440e-14
I-128 Pu-239 High 3.724420e-05 2.383630e-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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I-128 U-235 Thermal 1.038350e-08 6.645420e-09
I-128 U-235 High 3.624970e-06 2.316550e-06
I-128 U-238 High 9.490330e-08 6.067240e-08
I-128 Pu-239 Thermal 9.178560e-07 5.874280e-07
I-128 Pu-239 Fast 3.469440e-14 2.220440e-14
I-128 Pu-239 High 3.724420e-05 2.382080e-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