Design of a cylindrical mirror analyzer for use with synchrotron radiation to investigate autoionization phenomena and angular distributions of photoemitted electrons

A first-order cylindrical mirror analyzer was designed and constructed to take advantage of the continuum nature and polarization of synchrotron radiation to study autoionization and angular distributions of electrons. Autoionization in the region 14.20–16.35 eV was found to contribute intensity to the lowest ionic state of ethylene. Seven Rydberg series converging to the seven vibrational levels of the fourth ionic state are reported. The applicability for measuring gas-phase angular distributions and the expected intensity variations from this type of experiment are discussed.