element
Information about Polonium-207:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:206.981578±0.000008amu
    Excess Mass (Δ):-17.159768±0.006993MeV
    Binding Energy:1622.205903±0.006999MeV
    β- Decay Energy:-3.910070±0.021733MeV
"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.
Radioactive Decay Data:

  • Spin: 5/2-
  • Half life: 5.80 h ( 20880 sec., λ = 3.31967×10-05 s-1)
  • Mode of decay:
    E.C.
    to
    207
    83
    Bi
      (Q = 2.909 MeV)   Branch ratio: 99.98 %
  • Mode of decay:
    α
    to
    203
    82
    Pb
      (Q = 5.216 MeV)   Branch ratio: 0.02 %
    Meta state at 1.383 Mev
  • Spin: 19/2- 5.80
  • Half life: 2.79 s ( 2.79 sec., λ = 0.24844 s-1)
  • Mode of decay: γ (IT)  (Q = 1.383 MeV)

  • Possible parent nuclides:
    E.C. from
    207
    85
    At
    α from
    211
    86
    Rn
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
05.79 h5/2- +0.79(6) NMR/ONZP A311 351 (83)
111547 ms13/2+ -0.910(14) TDPADPL 44B 456 (73)
238043 ns25/2+ 5.41(4) TDPADPS 31 122 (85)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.