220 Rn decay; t1/2 = 55.6 s (t = 80.2 s).

  1. 220Rn [a (+ g)] 216Po
g + c.e.(a) a
E(b) I(c) (c) Ic.e. E(b) I(c)
550.0 0.0011 8.8 10-6 5747 0.0011
      6288 0.999

Notes:

  1. c.e.: conversion electrons
  2. Energies in keV
  3. Intensities per `parent' decay of Th
  4. Data from compilations and amendments in Nuclear Data Sheets to Vol. 64 (1991)
  5. 220Rn entry in KAERI nuclide chart