A high-frequency electron paramagnetic resonance spectrometer for multi-dimensional, multi-frequency, and multi-phase pulsed measurements

Journal Article · Tue Jul 15 04:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4889873· OSTI ID:22308960

Cho, F. H. ^[1]; Stepanov, V. ^[2]

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1. Department of Physics, University of Southern California, Los Angeles, California 90089 (United States)
2. Department of Chemistry, University of Southern California, Los Angeles, California 90089 (United States)

We describe instrumentation for a high-frequency electron paramagnetic resonance (EPR) and pulsed electron-electron double resonance (PELDOR) spectroscopy. The instrumentation is operated in the frequency range of 107−120 GHz and 215−240 GHz and in the magnetic field range of 0−12.1 T. The spectrometer consisting of a high-frequency high-power solid-state source, a quasioptical system, a phase-sensitive detection system, a cryogenic-free superconducting magnet, and a {sup 4}He cryostat enables multi-frequency continuous-wave EPR spectroscopy as well as pulsed EPR measurements with a few hundred nanosecond pulses. Here we discuss the details of the design and the pulsed EPR sensitivity of the instrumentation. We also present performance of the instrumentation in unique experiments including PELDOR spectroscopy to probe correlations in an insulating electronic spin system and application of dynamical decoupling techniques to extend spin coherence of electron spins in an insulating solid-state system.

• OSTI ID: 22308960
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 85; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CRYOSTATS
DECOUPLING
ELDOR
ELECTRON SPECTROSCOPY
ELECTRON SPIN RESONANCE
GHZ RANGE
HELIUM 4
MAGNETIC FIELDS
SENSITIVITY
SPECTROMETERS
SPIN
SUPERCONDUCTING MAGNETS