Year: 2025
Type: preprint
Abstract: By means of numerical simulations we further investigate the recently-observed phenomenon of rf-driven coherence leakage in MAS NMR of I = 3/2 quadrupolar nuclei. In particular, we focus our attention on the triple-quantum coherence leakage towards the single-quantum central-transition matrix element. We propose a simple 1D experiment that allows for the selective detection of single-quantum coherence solely stemming from such leakage. The offset from the carrier and rf-field strength may be tuned so that the resulting lineshapes are quasi-isotropic, with residual inhomogeneities possibly smaller than typical homogeneous broadenings. A qualitative relationship between the relevant parameters is given as guideline for the experimental setup.
Source: ChemRxiv
Author: Diego Carnevale
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4414088362