91-Pa-231
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)
231.035884243 ± 0.000002395 (amu) [mass excess = 33425.957 ± 2.232 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-381.556 ± 2.034 (keV)
Strong Gamma-rays from Decay of Pa-231 (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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27.36 10.29 Alpha
283.69 1.7 Alpha
300.07 2.47 Alpha
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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
A 3.276E+4 Y 11
Cross Sections (taken from JENDL-4.0)
Table of cross sections, Pa-231.
Figures of cross sections, Pa-231: 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
Pa-230 (Z= 91, A=230), MT=102 (n,γ)
Pa-231 (Z= 91, A=231), MT= 2 (Elastic scattering)
Pa-231 (Z= 91, A=231), MT= 4 (Inelastic scattering)
Pa-232 (Z= 91, A=232), MT= 16 (n,2n)
Pa-233 (Z= 91, A=233), MT= 17 (n,3n)