Structure of $^{206}$Radium

Various radium isotopes have been investigated in the past in order to study the onset of collectivity below N=126. Here we present results of an investigation of $^{206}$Ra which has six protons above the Z=82 shell closure and eight neutron holes in the N=126 neutron shell closure. Though experiments on $^{206}$Ra have previously been performed, this is the first time prompt gamma ray transitions have been measured. Using the technique of recoil decay tagging at the gas-filled Small Angle Separator System at Yale for Evaporation Residues (SASSYER), $^{206}$Ra and other isotopes were identified at the focal plane and correlated to their prompt gamma rays detected at the target position. A comparison of $^{206}$Ra with neighboring isotopes, especially with respect to trends in collectivity, is presented.