Differential cross-sections for the electron impact excitation ofthe B 1Σu+, c 3Πu, a 3Σg+, C 1Πu, E, F 1Σg+ and e 3Σu+states of molecular hydrogen

Abstract

Using energy loss spectroscopy, normalized differential and integralcross-sections for the electron impact excitation of the lowest boundexcited states of H2 from the ground X 1Σg+state have been measured at 17.5, 20 and 30 eV impact energies andfor scattering angles from 5° up to130°. These differential cross-sections (DCSs) are aneffort to improve those taken previously (Khakoo M A and Trajmar S1986b Phys. Rev. A 34 146). Here a more sophisticatedelectron spectrometer and a more accurate spectrum analysis code isused to unfold the energy loss spectra. The results are compared withearlier DCS measurements for the B 1Σu+, c 3Πu, a 3Σg+, C 1Πustates of H2 and with existing theoretical results for the B 1Σu+, c 3Πu, a 3Σg+, C 1Πu, E, F 1Σg+ and e 3Σu+states.