title: Photodissociation at various wavelengths: fragmentation studies of oxazine 170 using nanosecond laser pulses.
abstract: The fragmentation of oxazine 170, a rhodamine-type dye, has been investigated by means of collisions and photodissociation with visible and ultraviolet radiation in a Fourier transform ion cyclotron resonance mass spectrometer. Because of an improved experimental setup, the photodissociation processes of stored ions are measured with high intensity with respect to the absorbed photons. By isotope labelling and quantum chemical calculations, the various fragmentation mechanisms are investigated. It is shown that the most important intermediate ion structure leading to the various ionic products is an even-electron azarine cation. Several new fragmentation mechanisms have been unveiled for the first time.
authors: Christian-Albrechts Universität zu Kiel, Max-Eyth-Straße 1, 24118 Kiel, Germany. gernert@phc.uni- kiel.de.
authors: Claus
authors: C
authors: Gernert
authors: Christian- Albrechts Universitäät zu Kiel, Max-Eyth-Straße 1, 24118 Kiel, Germany. grote@phc.uni- kiel.de.
authors: Jürgen
authors: J
authors: Grotemeyer