The form factors for electroexcitation of the lowest $T=\frac{3}{2}$ levels in ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$ (14.39 MeV, ${\frac{3}{2}}^{-}$; 16.97 MeV, ${\mathrm{½}}^{-}$) have been measured for momentum transfers between 0.5 and 1.1 ${\mathrm{fm}}^{-1\mathrm{}}$. Results are also presented for levels of unknown $T{J}^{\pi }$ at 16.63 and 17.48 MeV excitation. Radiative widths have been extracted. The form factor of the 16.63-MeV state is compared with simple-spherical and deformed shell-model form factors. The ground-state rms radius and quadrupole moment have been deduced from the elastic scattering data.

• Received 14 August 1972

DOI:https://doi.org/10.1103/PhysRevC.7.2228