 [@0000Ghi00].  $^{000}$Rn {#rn-00 .unnumbered} ----------  In 0000 Hyde et al. reported the first observation of $^{000}$Rn in the paper "Low mass francium and emanation isotopes of high alpha-stability" [@0000Hyd00]. Thorium foils were bombarded with up to 000 MeV protons from the Berkeley 000-inch cyclotron. $^{000}$Fr was chemically separated and $^{000}$