3E145

Penning ionization electron spectroscopy of polycyclic aromatic hydrocarbons by laser desorption

Masayo Yamauchi, Kohji Okamura, Hideo Yamakado, and Koichi Ohno
(Department of Chemistry, Faculty of Science, Tohoku University)

Penning ionization electron spectra of gaseous anthracene and coronene were observed by laser desorption method. Electron spectroscopy of polycyclic aromatic hydrocarbons in gas phase is usually difficult because of their low vapor pressure. Accordingly we used laser desorption method to vaporize the sample on a metal plate and enable to measure Penning ionization electron spectra effectively.