Table 2.

Summary of effective energy and dose constants for radium-223 and progeny for all emission combined

NuclideEffective energy*Dose constant Δ (Gy kg/Bq/s)
223Ra (11.43 d)5.999.58 × 10−13
5.568.90 × 10−13
219Rn (3.96 s)6.951.11 × 10−12
6.721.08 × 10−12
215Po (1.78 ms)7.531.20 × 10−12
7.391.18 × 10−12
211Pb (36.1 min)0.5188.29 × 10−14
211Bi (2.17 min)6.751.08 × 10−12
6.571.05 × 10−12
207Tl (4.77 min)0.4947.90 × 10−14
Total28.24.5 × 10−12
26.44.2 × 10−12
  • NOTE: From Nuclide Explorer data sheets, Institute for Transuranium Elements, Karlsruhe, Germany. European Commission, Joint Research Centre, Program Version 1.00 (1999). Branching of <1% is not considered.

  • * Includes α, β, photon, X-ray, and electron energies.

  • Includes only α-particle energies.