Innovative NMR methods such as double rotation (DOR), multiple-quantum MAS (MQMAS) and satellite-transition MAS (STMAS) can be used to separate quadrupolar and chemical shift broadening and obtain isotropic resolution. These capabilities are available at various high-field NMR instruments. The high fields are particularly useful for low-γ nuclei which have inherent low sensitivity.
The following spectrometers are available for this technique:
- 900 MHz 105 mm NMR Magnet (Tallahassee)
- 830 MHz 31 mm NMR Magnet (Tallahassee)
- 800 MHz 63 mm NMR Magnet (Tallahassee)
The following probes are available for this technique:
- 830 MHz Low-G 3.2 mm MAS 1H–X probe for sensitive X detection with 1H decoupling (NHMFL #51)
- 830 MHz 7.0 mm MAS probe for low-γ nuclei (NHMFL #17)
- 830 MHz 4.0 mm MAS probe for low- and mid-γ nuclei (NHMFL #02)
- 830 MHz 1.8 mm MAS probe for low-and mid-γ nuclei (NHMFL #05)
- 830 MHz 2.75mm MAS 1H–X probe (NICBP, Estonia)