ORGANIC CHEMISTRY Chapter 9 9.3A Sweep(CW) NMr Spectrometers NMR spectrometers can be designed so that irradiate the compound with electromagnetic energy of a constant frequency while the magnetic field strength is varied(扫场) or swept(扫频) Ho Sample tube ka lio freguency utput input spectrum Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 9.3A Sweep (CW) NMR Spectrometers NMR spectrometers can be designed so that irradiate the compound with electromagnetic energy of a constant frequency while the magnetic field strength is varied (扫场)or swept(扫频)