85-At-217
 basic
 element
85-astatine-217
  • Atomic Mass: 217.0047096 +- 0.0000081 amu
  • Excess Mass: 4386.981 +- 7.541 keV
  • Binding Energy: 1680590.029 +- 7.547 keV
  • Beta Decay Energy: B- 740.598 +- 7.903 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: 32.3 ms
  • Mode of decay: Alpha to Bi-213
    • Branch ratio: 99.99 %
    • Decay energy: 7.202 MeV
  • Mode of decay: Beta to Rn-217
    • Branch ratio: 0.01 %
    • Decay energy: 0.740 MeV

  • Possible parent nuclides:
    Alpha from Fr-221
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)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
032 ms9/2- 3.8(2) NO/SHFI 75 323 (92)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.