ON THE MEASUREMENT OF DIPOLE-MOMENTS IN DIFFERENT ELECTRONIC STATES OF AROMATIC-MOLECULES - 1-FLUORONAPHTHALENE AS AN EXAMPLE

This work presents studies on the influence of homogenous and static e lectric fields upon the 0(0)(0) vibrational band in the A (1)A' <-- X 1A' electronic transition of the free asymmetric 1-fluoronaphthalene m olecule. Narrow-band laser radiation at 313.8 nm was generated by mean s of external frequency doubling of the output of a cw ring dye laser system. The jet-cooled molecules were excited between two capacitor pl ates. Shifts and splittings of certain rovibronic transitions due to t he Stark effect could be measured and evaluated. These data yielded ac curate values for all dipole moment components involved in the vibroni c transition. Then, field-dependent intensities could be calculated an d, accordingly, complete Stark spectra were simulated.