Gamma-Ray Transitions inF20

The $\gamma$-ray decay of the levels of ${}_{}{}^{20}{}_{}{}^{}\mathrm{F}$ at 1824, 1843, and 3176 keV has been studied. Results indicate that each of these levels has only one mode of decay. For the 1824-keV level this finding is consistent with the $L=4\mathrm{}$ transfer reported by Fortune and Crozier. Together with previous angular-correlation results this determines the probable assignments $J^{\pi }=5^{+}$ for the 1824-keV level and $J=4\mathrm{}$ for the 823-keV level. This and other recent experimental developments are in good agreement with published calculated ${}_{}{}^{20}{}_{}{}^{}\mathrm{F}$ structure by Halbert, McGrory, Wildenthal, and Pandya.