84-Po-209
 basic
 XS graphs

 element
84-polonium-209

  • Atomic Mass: 208.9824158 +- 0.0000035 amu
  • Excess Mass: -16379.586 +- 3.231 keV
  • Binding Energy: 1637568.367 +- 3.243 keV
  • Beta Decay Energy: B- -3486.479 +- 7.483 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: 1/2-
  • Half life: 102 years
  • Mode of decay: Alpha to Pb-205
    • Branch ratio: 99.52 %
    • Decay energy: 4.979 MeV
  • Mode of decay: Electron capture to Bi-209
    • Branch ratio: 0.48 %
    • Decay energy: 1.893 MeV

  • Possible parent nuclides:
    Electron capture from At-209
    Alpha from Rn-213
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
0102 y1/2- 0.68(8) OJOSA 56 1292 (66)
141824.4 ns(13/2)- 6.13(9) TDPADNP A273 253 (76)
147398.1 ns(17/2-) 7.75(5) TDPADNP A273 253 (76)/NIM 114 349 (74)
(-)0.39(8) [210Po 1557]TDPADNP A394 245 (83)
4266118 ns31/2- +9.68(8) [208Po 1528]TDPADPS 14 95 (76)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.