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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Impact of the Characteristic Impedance of Coaxial Lines on the Sensitivity of a 750-MHz Electronically Tunable EPR Resonator
| 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)
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Submitter: 平田 拓
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