Spectroscopy in a high magnetic field reduces second-order quadrupolar shift while increasing chemical shift. It changes the scale between quadrupolar spins. The application of QCPMG multiple echo acquisition under the high magnetic field of a 25T resistive magnet are presented for acquiring large quadrupolar patterns. It shows that temporal field fluctuations and spatial homogeneity of the Keck magnet at the hundreds to thousands of kilohertz can be efficiently recorded using a combination of QCPMG and magnetic field stepping with negligible hindrance from the inhomogeneity and field fluctuations of powered magnets.
Revised: April 5, 2010 |
Published: December 1, 2009
Citation
Hung I., K. Shetty, P.D. Ellis, W.W. Brey, and Z. Gan. 2009.High-field QCPMG NMR of large quadrupolar patterns using resistive magnets.Solid State Nuclear Magnetic Resonance 36, no. 4:159-163.PNNL-SA-66807.doi:10.1016/j.ssnmr.2009.10.001