SYNCHROTRON-RADIATION-INDUCED PHOTOIONIZATION AND PHOTODISSOCIATION OF CARBON-MONOXIDE IN THE 14-35 EV REGION

Carbon monoxide has been excited with monochromatic synchrotron radiat ion in the 14-35 eV range using the Swedish, synchrotron facility MAX in Lund. The decay products were studied in various detection channels such as formed CO+ and C+ ions using mass spectroscopy and visible or VUV fluorescence using photon detection. A rich line structure is obs erved which is attributed to CO Rydberg series converging to the X, A, B, D, C and E states in CO+. While a great number of these lines are already known, some of them are classified here for the first time. Th e combination of information from the fluorescence spectra and the mas s spectra contribute important information concerning the autoionizati on and predissociation of these various Rydberg series.