Abstract

Recently a new synchrotron radiation source was constructed in the Institute for Molecular Science, Okazaki, Japan, for studying molecular science and its related fields. This synchrotron radiation source, called UVSOR, is a 600-MeV electron storage ring with sixteen beam lines. The wavelength region available is 10-2000 Å. A wiggler and an undulator have also been installed. At present, three beam lines are used for gas-phase measurements (absorption, fluorescence, photon, and photoelectron), and four lines are for solid-state experiments (absorption, photoelectron, and fluorescence). Several other lines and apparatus are now under construction. A supersonic-jet apparatus constructed for photoelectron experiments is explained in some detail. Also discussed is the excited-state photoelectron spectroscopy which has been developed to study molecular excited states by means of a resonant multiphoton ionization technique with a nanosecond UV or visible laser. Not only radiative but also nonradiative excited states of molecules can be studied with this technique. Such laser photoelectron work is complementary to the synchrotron radiation photoelectron work.

© 1985 Optical Society of America