Radioactive Isotopes of Iodine

Five radioactive iodine isotopes are described, three of which are new. These were produced, by use of 8 Mev deuterons, 16 Mev helium ions and neutrons. Evidence is presented for the following isotopic assignments and properties: It is shown that the 8-day activity is also produced by the radioactive decay of ${\mathrm{Te}}^{129\mathrm{o}\mathrm{r}131}$. Chemical identification has been made in every case. A table of approximate yields is given.