A 4-mm probe for (13)C CP/MAS NMR of solids at 21.15 T.
The design of a broadband 4-mm magic-angle spinning (MAS) X-(1)H/(19)F double resonance probe for cross-polarization (CP)/MAS NMR studies at 21.15 T ((1)H at 900 MHz) is described. The high-frequency (1)H/(19)F channel employs a new and efficient transmission line tuning design. The first (13)C CP/MAS NMR spectra recorded at 21.15 T have been obtained with this probe and exhibit the best S/N per milligram sample of hexamethylbenzene achieved so far for a 4-mm rotor.
Jakobsen
H J
HJ
Instrument Centre for Solid State NMR Spectroscopy, Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark. hja@chem.au.dk
Daugaard
P
P
Hald
E
E
Rice
D
D
Kupce
E
E
Ellis
P D
PD
D001555:Benzene Derivatives / Q000737:chemistry; D004867:Equipment Design; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods
D001555:Benzene Derivatives; C091695:hexamethylbenzene