element
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Information about Barium-121:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 120.924486 | ± | 0.000325 | amu |
| Excess Mass (Δ): | -70.340913 | ± | 0.303202 | MeV |
| Binding Energy: | 1003.159182 | ± | 0.303202 | MeV |
| β- Decay Energy: | -7.940000 | ± | 0.587000 | 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: 5/2(+)
- Half life: 29.5 s ( 29.5 sec., λ = 0.0234965 s-1)
- Mode of decay:
E.C. to
(Q = 6.800 MeV)
- Mode of decay: E.C. + p+ to
(Q = 4.200 MeV)
Branch ratio: 0.02 %
- Possible parent nuclides:
- E.C. from
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 | 30 s | 5/2(+) | | +0.660(1) | | | | "[135,137Ba]" | CFBLS | PL 211B 272 (88) |
| | | | | | +1.79(12) st | | "[135,137Ba]" | CFBLS | PL 211B 272 (88) |
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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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