Valence-shell ionization spectra of cyclopropane by symmetric noncoplanar (e, 2e) spectroscopy

✍ Scribed by M.P. Banjavcic; B.H. Watt; T.D. Pope; T.A. Daniels; R.P. Hammond; K.T. Leung

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 445 KB
• Volume: 160
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(89)87613-4

✦ Synopsis

Valence-shell ionization energy spectra (9-49 eV) of cyclopropane were measured at two relative azimuthal angles using symmetric noncoplanar (e, 2e) spectroscopy. The outer-valence spectrum is consistent with a single-particle picture of ionization from each of the live outer-valence orbit&, in agreement with published photoelectron data. Excited ionic states corresponding to many-body, clcctron correlation processes were observed for cyclopropane above 25 eV, indicating the breakdown of Koopmans' ionization picture in the inner-valence region, Comparison with an earlier Green's function calculation predicting the many-body structure is made. The ratio of Intensities in the iomzation spectra measured at the two azimuthal angles provides qualitative information on the dominant orbital symmetry of individual ionic states.