Absolute triply differential (e, 2e) cross sections for He in the intermediate energy region with comparison to theory

Absolute triply differential (e, 2e) cross section measurements are presented for He at incident energies E0 = 32.6, 44.6, 64.6, and 104.6 eV with equal energy sharing and the θ12 = π configuration. Results of distorted partial-wave calculations agree with the measurements; those of convergent close-coupling calculations agree with the relative angular distributions, and with absolute values after rescaling by consideration of the singly differential cross section