element
Information about Radium-205:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:205.006187±0.000221amu #
    Excess Mass (Δ):5.763000±0.205000MeV #
    Binding Energy:1580.011000±0.205000MeV #
"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:

  • Half life: 0.22 s ( 0.22 sec., λ = 3.15067 s-1)
  • Mode of decay:
    α
    to
    201
    86
    Rn
      (Q = 7.510 MeV)
  • Mode of decay: E.C. to
    205
    87
    Fr
      (Q = 7.000 MeV)
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)