Dielectric Resonator for K a-Band Pulsed EPR Measurements at Cryogenic Temperatures: Probehead Construction and Applications

A. Raitsimring*, A. Astashkin, J. H. Enemark, A. Blank, Y. Twig, Y. Song, T. J. Meade

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The construction and performance of a K a-band pulsed electron paramagnetic resonance (EPR) cryogenic probehead that incorporates dielectric resonator (DR) is presented. We demonstrate that the use of DR allows one to optimize pulsed double electron-electron resonance (DEER) measurements utilizing large resonator bandwidth and large amplitude of the microwave field B 1. In DEER measurements of Gd-based spin labels, use of this probe finally allows one to implement the potentials of Gd-based labels in distance measurements. Evidently, this DR is well suited to any applications requiring large B 1-fields and resonator bandwidths, such as electron spin echo envelope modulation spectroscopy of nuclei having low magnetic moments and strong hyperfine interactions and double quantum coherence dipolar spectroscopy as was recently demonstrated in the application of a similar probe based on an loop-gap resonator and reported by Forrer et al. (J Magn Reson 190:280, 2008).

Original languageEnglish (US)
Pages (from-to)441-452
Number of pages12
JournalApplied Magnetic Resonance
Volume42
Issue number4
DOIs
StatePublished - Jun 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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