Long-lived Nuclear Spin States in High-Field Solution NMR

J Am Chem Soc. 2004 May 26;126(20):6228-9. doi: 10.1021/ja0490931.

Abstract

Nuclear spin order may be stored in a liquid for a much longer time than the longitudinal relaxation time T1, by using rf fields to isolate states of different symmetry. The method is demonstrated on a sample containing AX spin systems.