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VOLUME 26 (1977) | ISSUE 11 | PAGE 725
Double resonance microwave transitions in intermediate complexes in the annihilation of triplet excitons
Using the method of magnetic resonance detected by the change of the reaction yield (RCDMR) at room temperature, we have observed, for the first time ever, two-step microwave transitions between the Zeeman levels of the intermediate two-triplet state produced in the course of annihilation of triplet excitons in anthracene-tetracyanbenzene crystals. The lifetime of this state is 1.4X 10~7 sec.