X-ray emission spectra of gaseous aminobenzene

High-resolution ultra-soft X-ray (USX) emission spectra of gaseous aminobenzene (aniline) are presented for the first time. The spectra are excited by an electron beam and recorded with a grazing incidence technique. Interpretation of the spectra is made with the aid of ab initio SCF calculations of the X-ray intensities and electron spectroscopic data. The analysis gives strong support to a previously suggested assignment of the valence photoelectron spectrum. An observed difference in bandwidth between the carbon K and nitrogen K transitions to the outermost valence state is discussed in terms of vibrational excitations.