85-At-197
 basic

 element
85-astatine-197

  • Atomic Mass: 196.9932900 +- 0.0003760 amu #
  • Excess Mass: -6250.000 +- 350.000 keV #
  • Binding Energy: 1529801.000 +- 350.000 keV #
  • Beta Decay Energy: B- -7797.000 +- 448.000 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: (9/2-)
  • Half life: 0.35 s
  • Mode of decay: Alpha to Bi-193
    • Branch ratio: 96.00 %
    • Decay energy: 7.100 MeV
  • Mode of decay: EC to Po-197
    • Branch ratio: 4.00 %
    • Decay energy: 7.200 MeV

    Meta state at 0.052 Mev
  • Spin: (1/2+)
  • Half life: 3.7 s
  • Mode of decay: Alpha to Bi-193
    • Branch ratio: <=100.00 %
    • Decay energy: 0 7.152 MeV
  • Mode of decay: EC to Po-197
    • Decay energy: 7.252 MeV

  • Possible parent nuclides:
    Alpha from Fr-201
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)