Applicability of the kinematic theory to singlet exciton fission in tetracene

Abstract
It is shown that the magnetic field dependence of singlet-exciton fission in tetracene crystals can be correctly accounted for with the kinematic theory of Suna [Phys. Rev. B 1, 1716 (1970)] including the two-dimensional character of the motion of the resulting pair of triplet excitons.