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The MagLab is funded by the National Science Foundation and the State of Florida.

Quadrupolar and Low Gamma NMR

Central transitions of half-integer quadrupolar nuclei are broadened by second-order quadrupolar shift even under magic angle spinning (MAS). High magnetic fields are effective reducing the quadrupolar broadening achieving high spectral resolution and sensitivity.

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.

Details

Available Spectrometers

The following spectrometers are available for this technique:

The following probes are available for this technique:

  • 1.5 GHz 3.2 mm MAS probe for low- and mid-γ nuclei (NHMFL #56)
  • 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)

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Last modified on 09 August 2024

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