MEASUREMENT OF SPIN LATTICE RELAXATION TIME T_1 BY RAPID SCAN CORRELATION NMR METHOD

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