99-Es-250
Spin
Level energy(keV) Spin & Parity
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ground state (6+)
ground state(+X) 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)
250.078612 ± 0.000107 (amu) [mass excess = 73227 ± 100 (keV) ]
[These values were derived from systematical trend]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
-846 ± 100 (keV) [derived from systematical trend]
Strong Gamma-rays from Decay of Es-250 (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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303.41 21.97 EC
349.4 20.09 EC
829.00 72.5 EC
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828.9 5.49 EC
989.1 13.33 EC
1031.9 10.58 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
EC 8.6 H 1
EC 2.22 H 5
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Es-251 (Z= 99, A=251), MT= 16 (n,2n)
Es-252 (Z= 99, A=252), MT= 17 (n,3n)
Es-253 (Z= 99, A=253), MT= 37 (n,4n)