title: Magnetic field dependence of electron spin polarization generated through radical-triplet interactions.
abstract: The magnetic field dependence of electron spin polarization (ESP), generated in free radicals when they encounter photoexcited triplets, was measured experimentally and analyzed theoretically. The time-resolved electron paramagnetic resonance measurements were performed with a microwave setup consisting of low-loss dielectric ring resonators with tunable microwave frequencies and the corresponding magnetic fields. The ESP of the radical was found in the magnetic field range of 170-370 mT, and the results of the calculation based on the numerical solution of the stochastic Liouville equation were found to be in line with the experimental data showing that ESP decreases when the magnetic field increases.
authors.affiliation: Department of Physical Chemistry and Farkas Center for Light-Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
authors.forename: Eli
authors.initials: E
authors.lastname: Stavitski
authors.forename: Linn
authors.initials: L
authors.lastname: Wagnert
authors.forename: Haim
authors.initials: H
authors.lastname: Levanon