Suppression of Radiation Damping in High-Resolution NMR
| Autor: | Hervé Barjat, Ray Freeman, Debra L. Mattiello |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Radiation
Nonionizing Nuclear and High Energy Physics Magnetic Resonance Spectroscopy Field (physics) Chemistry business.industry Biophysics Phase (waves) Water Condensed Matter Physics Sensitivity and Specificity Biochemistry Signal Solutions Free induction decay Magnetics Laser linewidth Glucose Optics Radiation damping Flip angle Image Processing Computer-Assisted Atomic physics business Line (formation) |
| Zdroj: | Journal of Magnetic Resonance. 136:114-117 |
| ISSN: | 1090-7807 |
| DOI: | 10.1006/jmre.1998.1613 |
| Popis: | The radiation damping field induced by an intense NMR line can be counterbalanced by a DANTE sequence of small flip angle pulses of opposite phase applied during the free induction decay. The transient NMR signal is acquired, one complex data point at a time, in the intervals between these DANTE pulses. As the intense signal decays, reducing the radiation damping field, the flip angles of the DANTE pulses are reduced at a matching rate. An experimental test on an aqueous solution of d -glucose demonstrates a reduction in linewidth at half height from 13.5 to 0.8 Hz, revealing a weak doublet response previously hidden under the broad water line. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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