Basic Info
Fission Yield
element
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Information about Yttrium-99:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 98.924635 | ± | 0.000026 | amu |
| Excess Mass (Δ): | -70.202280 | ± | 0.024392 | MeV |
| Binding Energy: | 838.751456 | ± | 0.024392 | MeV |
| β- Decay Energy: | 7.567133 | ± | 0.013985 | 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: 1.470 s ( 1.47 sec., λ = 0.471529 s-1)
- Mode of decay:
β- to
(Q = 7.567 MeV)
- Mode of decay: β- + n to
(Q = 3.000 MeV)
Branch ratio: 1.90 %
Meta state at 2.141 Mev
- Spin: 17/2+)
1.470
- Half life: 8.6 µs ( 8.6×10-06 sec., λ = 80598.5 s-1)
- Mode of decay: γ (IT) (Q = 2.142 MeV)
- Possible parent nuclides:
- β- from
- β- + n 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)
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