Bruker BioSpin Solid State NMR - Page 140

140 (327) BRUKER BIOSPIN User Manual Version 002
RFDR
Table 10.1. Acquisition Parameters
Parameter Value Comments
pulse program cprfdr.av Pulse program.
nuc1
13
C Nucleus on f1 channel.
o1p 100 ppm
13
C offset, to be optimized.
nuc2
1
H Nucleus on f2 channel.
o2p 2-3 ppm
1
H offset, to be optimized.
pl1 Power level for contact time on f1 channel.
pl11 Power level for f1 recoupling and excitation.
pl2 Power level for contact time on f2 channel.
pl12 Power level decoupling f2 channel and excitation.
pl13 Power level LG decoupling f2 channel.
p1 90° excitation pulse on f1 channel.
p2 180° excitation pulse on f1 channel.
p3 90° excitation pulse on f2 channel.
p15 Contact pulse on f1 and f2 channel.
d0 3µ t1 evolution period.
d1 Recycle delay.
cpdprg2 Spinal64 Spinal64 decoupling on f2 channel.
cpdprg3 cwlg cwlg decoupling on f2 channel.
ns 16 Number of scans.
cnst20 ≈100000 Proton rf field in Hz to calculate LG parameters.
cnst21 0 f2 channel offset.
cnst24 Additional Lee-Goldburg offset.
cnst31 Spinning speed in Hz.
l1 for 2-40 msec Number of rotor cycles for mixing time.
F2 direct
13
C Left column.
td 4k Number of complex points.
sw 200 ppm Sweep width direct dimension.
F1 indirect
13
C Right column.
td 256 Number of real points.
sw Rotor synchronized sweep width, or = 2 sw.