Isoscalar [ital E]2 strength in [sup 12]C from the ([ital e],[ital e][prime][alpha]) reaction

We have measured the first complete angular correlations of [alpha]-particle emission from the [sup 12]C isoscalar giant quadrupole resonance (GQ[sub 0]R) following excitation by inelastic electron scattering, for momentum transfers from 0.24 to 0.61 fm[sup [minus]1]. Analysis of these uniquely determines the GQ[sub 0]R strength distribution for the [alpha][sub 0] channel and sets limits on that for [alpha][sub 1].