224 Ra decay; t1/2 = 3.66 d (t = 5.28 d).

  1. 224Ra [a (+ g)] 220Rn
g + c.e.(a) a
E(b) I(c) (c) Ic.e. E(b) I(c)
422.0 2.9 10-5 2.9 10-7 5034 2.9 10-5
404.0 2.1 10-5 3.1 10-7 5051 7.3 10-5
645.0 5.2 10-5 3.1 10-7 "  
293.0 6.0 10-5 9.1 10-6 5161 7.3 10-5
241.0 0.040 0.011 5449 0.051
      5685 0.949

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. 224Ra entry in KAERI nuclide chart