Forward Electron Scattering in Benzene; Forbidden Transitions and Excitation Functions

✍ Scribed by Michael Allan

• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: German
• Weight: 846 KB
• Volume: 65
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19820650708

✦ Synopsis

Abstract

A systematic study of vibronic excitation in benzene via forward electron scattering was carried out using a novel type of a trochoidal electron spectrometer. Energy‐loss spectra in the energy range 1.0–9.5 eV, with residual energies 0.03–20 eV as well as excitation functions for individual vibrational levels of some of the triplet and singlet states are presented and discussed. Following observations were made. (1) A new s‐type Rydberg series with quantum defect δ = 0.86. (2) Additional information on the complex 6–6.5 eV band. (3) A new core excited shape resonance at 6.5 eV. (4) A narrow Feshbach resonance at 5.87 eV, The new spectrometer is suggested as a tool for routine study of forbidden transitions and negative ion states in organic molecules.