87-Fr-204
basic
element
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87-francium-204
- Atomic Mass: 204.0005930 +- 0.0002220 amu #
- Excess Mass: 552.000 +- 207.000 keV #
- Binding Energy: 1577933.000 +- 207.000 keV #
- Beta Decay Energy: B- -5481.000 +- 275.000 keV #
"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.
- Spin: (3+)
- Half life: 1.7 s
- Mode of decay: Alpha to At-200
- Branch ratio: ~80.00 %
- Decay energy: 7.170 MeV
- Mode of decay: EC to Rn-204
- Branch ratio: ~20.00 %
- Decay energy: 8.600 MeV
Meta state at 0.041 Mev
- Spin: (7+)
- Half life: 2.6 s
- Mode of decay: Alpha to At-200
- Branch ratio: <=100.00 %
- Decay energy: 0 7.211 MeV
Meta state at 0.316 Mev
- Spin: (10-)
- Half life: ~1 s
- Mode of decay: Alpha to At-200
- Branch ratio: <=100.00 %
- Decay energy: 0 7.486 MeV
- Mode of decay: IT to Fr-204
- Possible parent nuclides:
- Alpha from Ac-208
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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