Related Experiment Video
Updated: Jul 3, 2026

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
Published on: September 26, 2016
A multifrequency high-field pulsed electron paramagnetic resonance/electron-nuclear double resonance spectrometer
Gavin W Morley1, Louis-Claude Brunel, Johan van Tol
1Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA. g.morley@ucl.ac.uk
Abstract:
We describe a pulsed electron paramagnetic resonance spectrometer operating at several frequencies in the range of 110-336 GHz. The microwave source at all frequencies consists of a multiplier chain starting from a solid state synthesizer in the 12-15 GHz range. A fast p-i-n-switch at the base frequency creates the pulses. At all frequencies a Fabry-Perot resonator is employed and the pi/2 pulse length ranges from approximately 100 ns at 110 GHz to approximately 600 ns at 334 GHz. Measurements of a single crystal containing dilute Mn(2+) impurities at 12 T illustrate the effects of large electron spin polarizations. The capabilities also allow for pulsed electron-nuclear double resonance (ENDOR) experiments as demonstrated by Mims ENDOR of (39)K nuclei in Cr:K(3)NbO(8).
Related Concept Videos
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
NMR Spectrometers: Overview
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
NMR Spectrometers: Resolution and Error Correction
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

