Figure 8.

(a) Average steady-state nuclear spin polarization (n_pol,av) and (b) time constant (t_DNP,av), as a function of MAS frequency (ω_r/2π) for simulations with ω₁/2π = 0.08 MHz and T_1e = 2 ms (circles), with ω₁/2π = 0.8 MHz and T_1e = 2 ms (squares), and with ω₁/2π = 0.8 MHz and T_1e = 0.2 ms (diamonds). 100 biradical orientations were used for the powder average and the calculations were run for 71 ms or longer. MAS frequencies below 210 Hz were calculated with a 10 ns timestep. Lines are drawn to guide the eye.