Definition of the coordinate system for a molecule in a symmetry point group. is half of the bond angle. The position of the spectrometer is indicated with respect to the molecular frame for , , and symmetries.
Total ion-yield spectrum of sulfur dioxide at the O ionization edge. The step size in the measurement was set to /step and the photon energy resolution was . Peak A is calibrated to the energy determined in Ref. 3. The spectrum is used for identification of the resonance peaks.
Ion time-of-flight spectra (mass spectra) measured at the different peaks indicated in Fig. 2 as well as below resonance at . The measurements are performed with the spectrometer mounted in the polarization plane.
A closeup of the , , and peaks measured as in Fig. 3. The measurements are performed with the spectrometer both parallel (solid line) and perpendicular (dotted line) to the polarization plane of the synchrotron radiation. The intensity scale is not the same in all plots.
A zoom of the , , and peaks showing the PEPICO (solid line) data as well as projections of the (dotted line) and (dashed line) data onto a common time axis. All measurements are performed with the spectrometer mounted parallel to the polarization of the synchrotron radiation. All data are normalized to the number of counts in the specific data set. For example, for the below resonance measurement 3% of the ions measured in PEPICO, 2.5% of the ions measured in , and 2% of the ions measured in arrive with a flight time of .
Electron-ion-ion coincidence maps of the two-body dissociation channel . The raw data are plotted and so is each ion. Also indicated in each panel is the slope of the coincidence plot. The measurement is performed with the spectrometer parallel to the electric field polarization vector of the incident synchrotron radiation.
Electron-ion-ion coincidence maps for the three-body dissociation channel . In each panel insets of the projection onto the time axes are shown together with the slope of the coincidence plot. The measurement is performed with the spectrometer parallel to the electric field polarization vector of the incident synchrotron radiation.
“PIPICO” data of the fragments, measured: (a) below resonances at (b) at feature A, (c) at feature B, (d) at feature C, (e) at feature D, and (f) above resonances at . In (c)–(e) the line fitting with the experimental points is the sum of the two contributing profiles.
The energies and assignments of the the O absorption spectrum of seen in Fig. 2. Peak A is calibrated to (Ref. 3).
Article metrics loading...
Full text loading...