Laser flash photolysis study of magnetic field effects on the photodecomposition of phenacyl phenyl sulfone in micellar solution

The yield of escaping benzenesulfonyl radical was found to be increased by a magnetic field. The yield at 1.2 T was 1.53 ± 0.05 times that at 0 T. From the observed magnetic field effects, the present reaction was proved to occur from triplet radical pairs.