Optically detected EPR effect in the a 3Au triplet state of the oxalylfluoride molecule excited to the J′=2 and 4 rotational levels of the 00(A 1Au) vibronic state Original Research Article

In the present study, resolved optically detected EPR spectra were measured for the 2ij levels of the A 1Au00 vibronic state. Values of the fine and hyperfine constants were estimated from analysis of these spectra for the triplet rotational levels, coupled by the intramolecular interactions with the singlet levels studied. The decay profile can be fitted by a biexponential function in presence of both magnetic and microwave fields. The observed data were analyzed using the electron- and nuclear-spin decoupling mechanism in the limit of low level density and “high” field limit.