Polarization enhancement technique for nuclear quadrupole resonance detection

Y J Kim; T Karaulanov; A N Matlashov; S Newman; A Urbaitis; P Volegov; J Yoder; M A Espy

doi:10.1016/j.ssnmr.2014.05.002

Polarization enhancement technique for nuclear quadrupole resonance detection

Solid State Nucl Magn Reson. 2014 Jul-Sep:61-62:35-8. doi: 10.1016/j.ssnmr.2014.05.002. Epub 2014 May 16.

Authors

Y J Kim¹, T Karaulanov², A N Matlashov², S Newman², A Urbaitis², P Volegov², J Yoder², M A Espy²

Affiliations

¹ Los Alamos National Laboratory, P.O. Box 1663, MS-D454, Los Alamos, NM 87545, USA. Electronic address: [email protected].
² Los Alamos National Laboratory, P.O. Box 1663, MS-D454, Los Alamos, NM 87545, USA.

PMID: 24882748
DOI: 10.1016/j.ssnmr.2014.05.002

Abstract

We demonstrate a dramatic increase in the signal-to-noise ratio (SNR) of a nuclear quadrupole resonance (NQR) signal by using a polarization enhancement technique. By first applying a static magnetic field to pre-polarize one spin subsystem of a material, and then allowing that net polarization to be transferred to the quadrupole subsystem, we increased the SNR of a sample of ammonium nitrate by one-order of magnitude.

Keywords: Ammonium nitrate; Nitrogen-14; Nuclear quadrupole resonance (NQR); Polarization enhancement NQR.

Published by Elsevier Inc.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Explosive Agents / analysis
Magnetic Resonance Spectroscopy / methods*

Substances

Explosive Agents