Figure 4.

Calculations of singlet-yield anisotropies Γ for radical pairs with (A) 1, (B) 2, and (C) 3 protons on one radical and none on the other. For each member of the ensemble of radical pairs, parameters were assigned values at random from within the ranges: −4 mT < D < 4 mT; −2 mT < J < 2 mT; −1 mT < a^(i,k) < 1 mT; −3 < α^(i,k) < 3; and 0 < γ^(i,k) < π; 0 < δ^(i,k) < 2π, with k = 10⁶ s⁻¹. Each singlet-yield was calculated for a grid of 900 values of θ and φ, from which Γ was determined using Eq. 11. The colored dots represent values of Γ in the ranges 10–15% (yellow), 15–20% (green), and >20% (red).