element
Information about Radon-201:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:200.995535±0.000214amu #
    Excess Mass (Δ):-4.159000±0.199000MeV #
    Binding Energy:1559.212000±0.199000MeV #
    β- Decay Energy:-7.872000±0.406000MeV #
"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: (3/2-)
  • Half life: 7.0 s ( 7 sec., λ = 0.099021 s-1)
  • Mode of decay:
    α
    to
    197
    84
    Po
      (Q = 6.860 MeV)   Branch ratio: ~80.00 %
  • Mode of decay: E.C. to
    201
    85
    At
      (Q = 6.600 MeV)   Branch ratio: ~20.00 %
    Meta state at 0.280 Mev
  • Spin: 13/2+) 7.0
  • Half life: 3.8 s ( 3.8 sec., λ = 0.182407 s-1)
  • Mode of decay:
    α
    to
    197
    84
    Po
      (Q = 7.140 MeV)   Branch ratio: ~90.00 %
  • Mode of decay: E.C. to
    201
    85
    At
      (Q = 6.880 MeV)   Branch ratio: ~10.00 %
  • Mode of decay: γ (IT) to
    201
    86
    Rn
      (Q = 0.280 MeV)   Branch ratio: ~0.00 %

  • Possible parent nuclides:
    α from
    205
    88
    Ra
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)