104-Rf-257
basic
element
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104-rutherfordium-257
- Atomic Mass: 257.1030720 +- 0.0002850 amu #
- Excess Mass: 96011.000 +- 265.000 keV #
- Binding Energy: 1896954.000 +- 265.000 keV #
- Beta Decay Energy: B- -4459.000 +- 353.000 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: (7/2+)
- Half life: 4.7 s
- Mode of decay: Alpha to No-253
- Branch ratio: 79.60 %
- Decay energy: 9.250 MeV
- Mode of decay: EC to Lr-257
- Branch ratio: 18.00 %
- Decay energy: 3.400 MeV
- Mode of decay: SF
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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