Discovery of the Radioactive Decay of 223Ra by 14C Emission and Experiments with the Magnetic Spectrometer Soleno

The radioactive decay of ²²³Ra by ¹⁴C nuclei emission was discovered in 1984 by Rose and Jones from the University of Oxford.1 Essentially, these authors found that ²²³Ra, in its ground state, which is well known for a long time to be an α-emitter, has a parallel decay by ¹⁴C emission with a branching ratio relative to α-particles of (8.5 ± 2.5) × 10^-10.