81-Tl-201
Spin
Level energy(keV) Spin & Parity
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ground state 1/2+
9.19100E+02 (9/2-)
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)
200.970822212 ± 0.000015397 (amu) [mass excess = -27178.934 ± 14.342 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-1919.535 ± 23.614 (keV)
Strong Gamma-rays from Decay of Tl-201 (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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135.34 2.56 EC
141.1 0.28 EC
167.43 10. EC
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331.1 85.8 IT
588.0 94.69 IT
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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
EC 3.0421 D 17
IT 2.01 MS 7
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0