Measuring of short spin-spin relaxation times distributions using NQR nutation experiments

Nikolay Sinyavsky; Ivan Mershiev

doi:10.1016/j.ssnmr.2019.101622

Measuring of short spin-spin relaxation times distributions using NQR nutation experiments

Solid State Nucl Magn Reson. 2019 Dec:104:101622. doi: 10.1016/j.ssnmr.2019.101622. Epub 2019 Oct 16.

Authors

Nikolay Sinyavsky¹, Ivan Mershiev²

Affiliations

¹ Kaliningrad State Technical University, Kaliningrad, Russia. Electronic address: nikolaj.sinyavskij@klgtu.ru.
² Immanuel Kant Baltic Federal University, Kaliningrad, Russia.

PMID: 31654877
DOI: 10.1016/j.ssnmr.2019.101622

Abstract

Experiments using nutation interferograms and nutation spectra in nuclear quadrupole resonance (NQR) are used for the first time to find the distribution of short spin-spin relaxation times in powder samples. Instead of the traditional method of the inversion of the Laplace transform, the inversion of the integral transformations of nutation interferograms and nutation spectra are used in this work. The use of the distributions of NQR relaxation times can provide new information on dynamic processes in complex molecular systems in the solid state. To illustrate the capabilities of the method, experimental results for ³⁵Cl, ⁷⁵As NQR and for ¹H NMR are provided.

Keywords: Nuclear quadrupole resonance; Nutations; Relaxation times distributions; Short relaxation times.