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Impact of the Characteristic Impedance of Coaxial Lines on the Sensitivity of a 750-MHz Electronically Tunable EPR Resonator

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75089

Title: Impact of the Characteristic Impedance of Coaxial Lines on the Sensitivity of a 750-MHz Electronically Tunable EPR Resonator
Authors: Nakaoka, Ririko Browse this author
Komarov, Denis A. Browse this author
Matsumoto, Shingo Browse this author
Hirata, Hiroshi Browse this author →KAKEN DB
Issue Date: Aug-2018
Publisher: Springer
Journal Title: Applied magnetic resonance
Volume: 49
Issue: 8
Start Page: 853
End Page: 867
Publisher DOI: 10.1007/s00723-018-1001-6
Abstract: A 750-MHz electronically tunable resonator was investigated in terms of the sensitivity of electron paramagnetic resonance (EPR) signal detection. The conversion efficiency of the radio-frequency magnetic field was calculated for resonators with 50- and 100-Omega coaxial coupling lines using three-dimensional (3D) microwave field and microwave circuit simulators. Based on the simulation results, two tunable resonators were physically constructed and compared in terms of EPR signal sensitivity using a nitroxyl radical solution. While the resonator with 100-Omega coaxial lines provided 14% greater signal intensity, its signal-to-noise ratio was lower than that of the resonator with 50-Omega lines. To demonstrate the capability of the constructed tunable resonator for EPR imaging experiments, a solution of nitroxyl radical and the leg of a tumor-bearing mouse were visualized.
Rights: This is a post-peer-review, pre-copyedit version of an article published in Applied Magnetic Resonance. The final authenticated version is available online at: https://doi.org/10.1007/s00723-018-1001-6.
Type: article (author version)
URI: http://hdl.handle.net/2115/75089
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 平田 拓

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