element
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Information about Europium-138:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 137.933450 | ± | 0.000430 | amu # |
| Excess Mass (Δ): | -61.991000 | ± | 0.401000 | MeV # |
| Binding Energy: | 1126.545000 | ± | 0.401000 | MeV # |
| β- Decay Energy: | -6.073000 | ± | 0.643000 | MeV # |
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra,
Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:
- Spin: (6-)
- Half life: 12.1 s ( 12.1 sec., λ = 0.0572849 s-1)
- Mode of decay:
E.C. to
(Q = 9.200 MeV)
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)
Magnetic Dipole Moments and Electric Quadrupole Moments
| Ex(kev) | T1/2 | Spin | | m(nm) | | Q(b) | | Ref. Std. | Method | Reference |
| 0 | 12.1 s | (6-) | | 5.3(7) | | | | [142Eu] | NO/S | HFI 75 471 (92) |
| | | | | | | | | | |
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.
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