METHOD AND APPARATUS FOR OBTAINING AN NMR SIGNAL HAVING A PRESELECTED FREQUENCY DOMAIN

摘要

A nuclear magnetic resonance spectroscopy method and apparatus. A free induction decay signal (95) is obtained from a sample and subjected to Fourier Transformation (96) to obtain a frequency spectrum (98). Undesired frequency peaks (102) are re- moved from the spectrum (98) to obtain a modified frequency spectrum (104). A new FID time domain signal (108) is obtained from modified spectrum (104). FID signal (108) is used in a new measurement to excite the sample and obtain a second frequency domain component spectrum (132).