93-Np-242
Spin
Level energy(keV) Spin & Parity
----------------------------------------
ground state (1+)
ground state(+X) (6+)
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)
242.061641379 ± 0.000214717 (amu) [mass excess = 57418.575 ± 200.008 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
2700.000 ± 200.000 (keV)
Strong Gamma-rays from Decay of Np-242 (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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735.93 5.2 B-
780.44 2.76 B-
1473.1 2.34 B-
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159.1 18.88 B-
785.7 59. B-
944.8 37.17 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- 2.2 M 2
B- 5.5 M 1
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0