72-Hf-181
Spin
Level energy(keV) Spin & Parity
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ground state 1/2-
1.73800E+03 (25/2-)
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)
180.949108338 ± 0.000002033 (amu) [mass excess = -47405.277 ± 1.894 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
1036.352 ± 2.226 (keV)
Strong Gamma-rays from Decay of Hf-181 (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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133.02 43.31 B-
345.93 15.12 B-
482.18 80.5 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- 42.39 D 6
Cross Sections (taken from JENDL-4.0)
Table of cross sections, Hf-181.
Figures of cross sections, Hf-181: type-1: type-2: type-3.
type-1: total, elastic and inelastic scattering, capture and fision cross sections
type-2: same as type-1 but cross sections are averaged in 70 energy group intervals
type-3: threshold reaction cross sections
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Hf-180 (Z= 72, A=180), MT=102 (n,γ)
Hf-181 (Z= 72, A=181), MT= 2 (Elastic scattering)
Hf-181 (Z= 72, A=181), MT= 4 (Inelastic scattering)
Hf-182 (Z= 72, A=182), MT= 16 (n,2n)
Ta-181 (Z= 73, A=181), MT=103 (n,p)
W -183 (Z= 74, A=183), MT=106 (n,3He)
W -184 (Z= 74, A=184), MT=107 (n,α)
W -186 (Z= 74, A=186), MT= 24 (n,2nα)