HXY probe 1H-13C DR mode, low range
13C CP
sample: 13C2H4 MMMBeta-3 275 C 20 min
MAS = 12.5 kHz, BP = 3500 mb, DP = 2890 mb
sr = -630 Hz, ref to CH of adamantane at 29.45 ppm
1H 90degree pulse length 3 us, 83 kHz@ 56 W, optimized
13C 90degree pulse length 4.2 us, 60 kHz@ 83 W, optimized
13C CP at 52 kHz, 63 W matched to 1H CP at 60 kHz, 29 W. ramp.100 contact, opt
1H 90 degree pulse and SPINAL64 decoupling at 83 kHz, 56 W
P15 = 3 ms