Ⅰ. INTRODUCTION There are two methods to measure the spin lattice relaxation time T1, i. e., pulse Fourier transform NMR （PFTNMR） and rapid scan correlation NMR （RSNMR）. With theformer method, the nuclei in vario...Ⅰ. INTRODUCTION There are two methods to measure the spin lattice relaxation time T1, i. e., pulse Fourier transform NMR （PFTNMR） and rapid scan correlation NMR （RSNMR）. With theformer method, the nuclei in various chemical environments are stimulated simultaneously, while with the latter, T1 of certain nuclei can be measured when nuclei in other展开更多
Nuclear magnetic resonance (NMR) spectra are usually measured either by continuous wave (CW) method or by pulse Fouries transform (PFT) method.Total or part spectra measured by CW method are undistorted, but the sensi...Nuclear magnetic resonance (NMR) spectra are usually measured either by continuous wave (CW) method or by pulse Fouries transform (PFT) method.Total or part spectra measured by CW method are undistorted, but the sensitivity is lower.展开更多
文摘Ⅰ. INTRODUCTION There are two methods to measure the spin lattice relaxation time T1, i. e., pulse Fourier transform NMR （PFTNMR） and rapid scan correlation NMR （RSNMR）. With theformer method, the nuclei in various chemical environments are stimulated simultaneously, while with the latter, T1 of certain nuclei can be measured when nuclei in other
文摘Nuclear magnetic resonance (NMR) spectra are usually measured either by continuous wave (CW) method or by pulse Fouries transform (PFT) method.Total or part spectra measured by CW method are undistorted, but the sensitivity is lower.
