A RADIOFREQUENCY ESR SPECTROMETER IMAGER

Authors
BOLAS NM GILLIES DG SUTCLIFFE LH SYMMS MR
Citation
Nm. Bolas et al., A RADIOFREQUENCY ESR SPECTROMETER IMAGER, Research of chemical intermediates, 22(6), 1996, pp. 525-537
Citations number
27
Categorie Soggetti
Chemistry
Journal title
Research of chemical intermediates → ACNP
ISSN journal
09226168
Volume
22
Issue
6
Year of publication
1996
Pages
525 - 537
Database
ISI
SICI code
0922-6168(1996)22:6<525:ARESI>2.0.ZU;2-H
Abstract
A Radiofrequency ESR spectrometer/imager is described. Modified from a Surrey Medical Imaging Systems NMR spectroscopy/imaging console, it u ses a PC with associated waveform controller cards to perform CW ESR. Digital phase-sensitive detection is provided by a vector processor. T he ''target-field''-designed magnet and gradients are driven by audio amplifiers. The dual-channel broad-band RF bridge has a reflection hom odyne configuration. Birdcage coils have been built that resonate near 200 MHz. Spectra and images of lossy samples of up to 4 cm diameter h ave been acquired.