Differential cross sections and angular correlation functions in electron-hydrogen scattering for energies betweenn=3 andn=4 thresholds

Differential cross sections and electron-photon angular correlation functions for electron impact excitation of hydrogen atoms in the energy range between then=3 andn=4 thresholds were calculated using the algebraic variational method. The cross sections and correlation functions show complicated and irregular structures associated with overlapping resonances in different partial waves. The availability of these quantities may help interested experimentalists to determine resonance positions, and also may furnish an important test of the adequacy of the computations.