Quantum beats in singlet-triplet transitions of radical pairs induced by a radio-frequency field

• This Letter reports on the experimental observation of quantum beats stimulated by a resonance radio-frequency field in the recombination luminescence of radical-ion pairs. The beat frequency for solutions of p-terphenyl in squalane increases linearly with rf-field amplitude in the range 1 to 10 G in a rotating frame. The beat frequency corresponds to the theoretically calculated one, with amplitude twice as low as the theoretical one. This is attributed to contributions from the recombination of spin-uncorrelated radical-ion pairs

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

Experimental study ; Luminescence ; Singlet triplet transition ; Quantum beat ; Ion radical recombination ; Radiofrequency irradiation ; Ion pair ; Organic free radical ; Organic compounds ; Chemical solution ; Kinetics

Chemical physics

Kemisk fysik

Publikations- och innehållstyp

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