ROTATIONAL LINE-INTENSITIES IN ZERO KINETIC-ENERGY PHOTOELECTRON-SPECTROSCOPY (ZEKE-PES)

Journal article

Recent advances in the understanding of the factors which determine line intensities in zero kinetic energy photoelectron spectroscopy (ZEKE-PES) are reviewed. The relative importance of direct ionization and autoionization is assessed. Explicit consideration of the channel interactions which take place in the vicinity of molecular ionization thresholds leads to a general discussion of rotational line intensities in ZEKE-PES. A series of limiting cases is proposed to assist in the interpretation of experimental results. Finally a new dynamical interpretation of ZEKE experiments based on the trapping of the ZEKE electrons in non-penetrating high-l Rydberg orbitals by weak electric fields appears to give a satisfactory explanation of most experimental results obtained to date.

Authors: Merkt, F; Softley, T

• Publication status: Published
• Journal: INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY
• Volume: 12
• Issue: 2
• Pages: 205-239
• Publication date: 1993-09-01
• DOI: 10.1080/01442359309353282
• EISSN: 1366-591X
• ISSN: 0144-235X
• Language: English