FIG. 1. Typical electron energy loss spectra for 20 eV electrons scattering from THF, obtained at a variety of kinematical conditions as denoted on the plots. The spectra are very complicated with many overlapping Rydberg terms. Different scales were employed to highlight the differences in the peak heights, of the various components in these spectra, which vary with the kinematical conditions under study. The three main bands of Rydberg terms that we study are also denoted on this figure.
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