Answers are grounded in this paper and cite their sources.
Photon echo and optical nutation have been easily observed in C¹³{H}₃$F and N${H}₂$D by applying Stark pulses which shift the molecular levels into resonance with cw laser radiation. Numerical computations of the nutation effect agree with observation, and echo characteristics closely follow predictions of existing theories. The T₂^_^' pressure dependence, from infrared-echo measurements, indicates that C¹³{H}₃$F relaxes primarily by rotational energy transfer.
No takes yet. Share an insight, caveat, or question.
Brewer et al. (1971) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: