title: Radio frequency magnetic field effects on electron-hole recombination.
abstract: We present measurements of the spectrum (1--80 MHz) of the effect of a weak (approximately 500 microT) radio frequency magnetic field on the electron-hole recombination of radical ion pairs in solution. Distinct spectra are observed for the pyrene anion/dimethylaniline cation radical pair in which one or both of the radicals are perdeuterated. The radical pair mechanism is developed theoretically and shown to account satisfactorily for both the magnetic field effect and the associated magnetic isotope effect.
authors.affiliation: Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom.
authors.forename: J R
authors.initials: JR
authors.lastname: Woodward
authors.forename: C R
authors.initials: CR
authors.lastname: Timmel
authors.forename: K A
authors.initials: KA
authors.lastname: McLauchlan
authors.forename: P J
authors.initials: PJ
authors.lastname: Hore