Fig. 4

(Top) Figure to show the pulse sequence used for echo-ELDOR experiment. Here Tm is the mixing time, t1 is the time between the first two pulses and the t2 is stepped from the echo. (Bottom) Coherence pathways used in the echo-ELDOR experiment. Here \(p\) represents the transverse magnetization, corresponding to spins rotating in a plan perpendicular to the external field [1]