Fig. 2.
(a) Two-pulse ESE field sweep spectrum of hpH cSO. Arrows indicate the EPR positions where the two-pulse ESEEM experiments of Fig. 4 were performed. (b) Normalized two-pulse 17O ESEEM recorded at gZ. Experimental conditions: mw frequency, 29.34 GHz; mw pulses, 2 × 15 ns; time interval between the mw pulses (for panel a), τ = 200 ns; temperature, 21 K.