Driven Equilibrium Methods for Enhancement of Nuclear Transients

Abstract

Several pulsed NMR experiments using rapidly repeating pulse sequences are described. Theoretical results for magnetization as a function of pulse spacing τ are given for cases where the Bloch equations apply, and compared with experiments. These results suggest a simple method of rapid signal accumulation when T2*<T2,T1, that is, when resolution is limited by magnet inhomogeneity.