84-Po-199
 basic
 element
84-polonium-199
  • Atomic Mass: 198.9835950 +- 0.0004430 amu #
  • Excess Mass: -15281.000 +- 412.000 keV #
  • Binding Energy: 1555757.000 +- 412.000 keV #
  • Beta Decay Energy: B- -6555.000 +- 354.000 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: (3/2-)
  • Half life: 5.48 min
  • Mode of decay: Electron capture to Bi-199
    • Branch ratio: 92.50 %
    • Decay energy: 5.600 MeV
  • Mode of decay: Alpha to Pb-195
    • Branch ratio: 7.50 %
    • Decay energy: 6.074 MeV
    Meta state at 0.310 Mev
  • Spin: 13/2+
  • Half life: 4.17 min
  • Mode of decay: Electron capture to Bi-199
    • Branch ratio: 73.50 %
    • Decay energy: 5.910 MeV
  • Mode of decay: Alpha to Pb-195
    • Branch ratio: 24.00 %
    • Decay energy: 6.384 MeV
  • Mode of decay: IT
    • Branch ratio: 2.50 %
    • Decay energy: 0.310 MeV

  • Possible parent nuclides:
    Alpha from Rn-203
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
3104.2 m13/2+ 0.99(7) NO/SJP G17 1673 (91)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.