Inelastic electron scattering cross sections were measured for energies below 60 MeV and momentum transfersq between 0.2 and 0.6 fm−1. Ground state radiative widths Γ γ 0 and transition radiiR tr were deduced. 2.18 MeV: Γ γ 0 (E2)=(4.40±0.34) · 10−4 eV,R tr=(4.28±0.39)fm; 3.56MeV: Γ γ 0 (M1)=(8.31±0.36)eV,R tr=(2.90±0.10)fm; 4.27 MeV: Γ γ 0 (E2)=(5.4±2.8) · 10−3 eV,R tr=(3.4±1.2) fm. The excitation of the 5.37 MeV level shows a transverse angular dependence.