Electron-Proton Coincidence Cross Section forHe3andH3

The cross section is given in the impulse approximation for inelastic $e$-${\mathrm{He}}^3$ and $e$-${\mathrm{H}}^3$ scattering assuming an ejected proton is counted in coincidence with the scattered electron. The process $e+{\mathrm{He}}^3\to d+p+e^{\prime }$ is considered in detail. This cross section is evaluated for the Gaussian, Irving, and Irving-Gunn three-body wave functions, the deuteron being described by a Hulthén wave function. The best agreement with the preliminary experimental results is obtained using the Irving-Gunn wave function.