Synchrotron radiation induced photoionization and photodissociation of small molecules

P. Erman, A. Karawajczyk, E. Rachlew-Källne, S. L. Sorensen, C. Strömholm
1994 Journal de Physique IV : Proceedings  
Tunable synchrotron radiation makes possible detailed studies of molecular photoionization and photodissociation. This is particular true if the induced reactions may be studied in various decay channels such as formed ions and positive and negative fragments as well as fluorescence in different wavelength regions. We have performed studies of this kind in the low energy range (14 -35 eV) using the Swedish synchrotron facility MAX in Lund. A special detection channel has been constructed for
more » ... constructed for the purpose involving two sections, one low pressure chamber with a quadrupole mass spectrometer and one high pressure chamber for fluorescence detection using a variety of photomultipliers. The studies performed so far involve small fundamental molecules such as N2 [1, 2] , 02[3,4], C0[5] and N0[6] as well as C02[7], methane[8] and neopentane[9] . While a great number of the observed lines are already known, several strong lines and series have been classified for the first time. The combination of information from the mass spectra and the fluorescence spectra contribute important information concerning autoionization and predissociation of the involved Rydberg states.
doi:10.1051/jp4:1994965 fatcat:4nvilbs32vfrtd6nceixarfucu