85-At-200  basic  element

85-astatine-200 Atomic Mass: 199.9902930 +- 0.0002220 amu # Excess Mass: -9042.000 +- 207.000 keV # Binding Energy: 1556807.000 +- 207.000 keV # Beta Decay Energy: B- -5016.000 +- 274.000 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: 43 s Mode of decay: Alpha to Bi-196 Branch ratio: 57.00 % Decay energy: 6.596 MeV Mode of decay: Electron capture to Po-200 Branch ratio: 43.00 % Decay energy: 7.970 MeV Meta state at 0.104 Mev Spin: (7+) Half life: 47 s Mode of decay: Electron capture to Po-200 Branch ratio: <=57.00 % Decay energy: 8.074 MeV Mode of decay: Alpha to Bi-196 Branch ratio: 43.00 % Decay energy: 6.700 MeV Meta state at 0.335 Mev Spin: (10-) Half life: 3.5 s Mode of decay: IT to At-200 Branch ratio: ~84.00 % Decay energy: 0.335 MeV Mode of decay: Alpha to Bi-196 Branch ratio: ~10.50 % Decay energy: 6.931 MeV Mode of decay: Electron capture to Po-200 Branch ratio: ~4.50 % Decay energy: 8.305 MeV Possible parent nuclides: Alpha from Fr-204 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)