QUT ePrints

Nuclear magnetic resonance radiation damping in inhomogeneous radio frequency fields: The toroid cavity detector

Momot, Konstantin I. & Johnson (Jr), Charles S. (2001) Nuclear magnetic resonance radiation damping in inhomogeneous radio frequency fields: The toroid cavity detector. Journal of Chemical Physics, 115(9), pp. 3992-4002.

View at publisher

Abstract

A theory is presented for radiation damping ~RD! in the toroid cavity nuclear magnetic resonance detector, a cylindrically symmetric inhomogeneous-rf field detector in which the magnitude of B1 is inversely proportional to the distance from the cylindrical symmetry axis. The equations of motion of the magnetization components are obtained and discussed. Numerical simulations of conventional- and composite-pulse experiments are presented, along with a discussion of the effects of RD on the evolution of magnetization. Preliminary simulations of RD in the presence of inhomogeneous line broadening are also presented. The signature effect of radiation damping in the TCD is the winding or unwinding of magnetization gratings that has recently been observed by other researchers. The observed magnitude of the effect is linked to the effective filling factor, which currently appears to be limited by the stray inductance of the detection circuit. The results are of interest in connection with recent findings regarding the interaction of RD with the dipolar demagnetizing field.

Impact and interest:

2 citations in Scopus
Search Google Scholar™
2 citations in Web of Science®

Citation countsare sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

235 since deposited on 02 Dec 2005
36 in the past twelve months

Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 2675
Item Type: Journal Article
Keywords: nuclear magnetic resonance hardware, NMR probe, signal detection, rotating frame imaging, TCD, toroid cavity detector, radiation damping
DOI: 10.1063/1.1386655
ISSN: 0021-9606
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2001 American Institute of Physics
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 02 Dec 2005
Last Modified: 09 Jun 2010 22:28

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page