Collision energy-resolved penning ionization electron spectra of acrolein

Kohji Okamura, Masayo Yamauchi, Hideo Yamakado, Koichi Ohno
(Faculty of Science, Tohoku University; College of Arts and Sciences, University of Tokyo)

We measured ultraviolet photoelectron spectra, Penning ionization electron spectra, and collision energy dependence of partial ionization cross sections of acrolein (propenal) which is one of the conjugated carbonyl compounds. These results show that the interaction between an acrolein molecule and He* is attractive around the oxygen lone pair. In the ultraviolet photoelectron spectrum, a weak band was observed, which could be assigned to an electron shake-up process.