EMAIL THIS PAGE TO A FRIEND

Journal of magnetic resonance (San Diego, Calif. : 1997)

Transient NOE enhancement in solid-state MAS NMR of mobile systems.


PMID 28961480

Abstract

It has been known that the heteronuclear cross-relaxation affects the dilute S spin magnetization along the longitudinal direction, causing an overshoot phenomenon for those mobile systems in spin-lattice relaxation rate measurements. Here, we analyze the Solomon equations for an I-S system and derive the transient cross relaxation effect as to when an overshoot phenomenon would take place and what the maximum enhancement could be at the time of the overshoot. In order to utilize such a transient nuclear Overhauser effect (NOE), we first time apply it to dynamic solid samples by inverting the