Low temperature solid-state NMR experiments of half-integer quadrupolar nuclides: caveats and data analysis
| Autor: | Robert W. Heck, Andrew S. Lipton, Jesse A. Sears, Paul D. Ellis |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Nuclear and High Energy Physics
Chemistry Biophysics Analytical chemistry Nuclear magnetic resonance spectroscopy Condensed Matter Physics Biochemistry Computational physics law.invention Magnetic field Capacitor Solid-state nuclear magnetic resonance law Electromagnetic coil Half-integer Nuclide Spectroscopy |
| Zdroj: | Journal of magnetic resonance (San Diego, Calif. : 1997). 168(1) |
| ISSN: | 1090-7807 |
| Popis: | Solid-state NMR spectroscopy of half-integer quadrupolar nuclides has received a lot of interest recently with the advent of new methodologies and higher magnetic fields. We present here the extension of our previous low temperature method to an 18.8 T system. This new probe entailed a total redesign including a cross coil and variable capacitors that are operational at cryogenic temperatures. The limitations to sensitivity are also discussed; including a new diode network, the utilization of a cryogenic band pass filter, and the consequences of the RF profiles of the coil. Further, details of the spectroscopy of quadrupolar nuclei in a protein are discussed, such as the observation of the outer transitions and how to distinguish them from the desired ±1/2 transition. |
| Databáze: | OpenAIRE |
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