Measurement ofTZ=−32Masses and the Isobaric Multiplet Mass Equation

Precise measurements of the masses of ${}_{}{}^9{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{13}{}_{}{}^{}\mathrm{O}$, and ${}_{}{}^{21}{}_{}{}^{}\mathrm{Mg}$ have been made using a magnetic spectrograph. The results are used to test the isobaric multiplet mass equation.