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

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.
Authors:
 [1] ;  [2] ;  [2] ;  [3]
  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)
  3. (United States)
Publication Date:
OSTI Identifier:
22308960
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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