Table 4:

Typical parameters for 2D-fpRFDR experiment.

MAS rate: 25 kHz (rotor period, τr = 40 μs)
Pulse	Power (kHz)	Duration (μs)	Phase
pH,1	110	2.27	(x)8, (−x)8
pH,2	Linear ramp between 50 and 100	2,000	y
pC,1	50	2,000	y
pC,2 (π/2)	50	5	x,−x and y,−y for each t1
pC,3 (π)*	37.5	$\frac{{\tau }_r}{3}=13.33$	x,y,x,y,y,x,y,x,−x,−y,−x,−y,−y,−x,−y,−x
pC,4 (π/2)	50	5	x,x,y,y,−x,−x,−y,−y
ϕReceiver	x,−x,y,−y,−x,x,−y,y,−x,x,−y,y,x,−x,y,−y
Delay	Duration (s)
d1	2
t1	varied for 2D acquisition
Decoupling period	Power (kHz)		Method
dec1	110		Two-pulse phase modulation (TPPM)
comments	N = 32