Abstract

A total width ${\ensuremath{\Gamma}}_{\mathrm{c}.\mathrm{m}.=303\ifmmode\pm\else\textpm\fi{}30}$ eV was found for the ${J}^{\ensuremath{\pi}}$, T${=(1/2)}^{\mathrm{\ensuremath{-}}}$,(3/2) level at 16.98 MeV in $^{9}\mathrm{Be}$ by employing high resolution beams of our 450 kV electrostatic accelerator. Partial widths of selected decay channels are given. A comparison with existing data of the lowest T=(3/2) level in the same nucleus as well as the ones in the mirror nucleus $^{9}\mathrm{B}$ is made. The results are discussed in terms of isospin mixing.

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