The Spectrum of the Molecular Eigenstates of Pyrazine and the Reconstruction of Decays of Rotational States of the 1B3u (0–0) Transition of Pyrazine

Abstract

The spectrum of the molecular eigenstates (ME) belonging to the various rotational members of the 1B3u (0–0) transition of pyrazine was measured with a very narrow band laser in a molecular beam with a Doppler width of 30 MHz.It is shown that, when the ME's belonging to a single rotational state are Fourier-transformed, the beating decays of these states are obtained. A problem is constituted by the lack of a fast component in these reconstructions, while it is observed in experiments on higher J-states.