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

Nakaoka, Ririko; Komarov, Denis A.; Matsumoto, Shingo et al.

Applied magnetic resonance, 2018, 49(8), 853-867

Permalink : https://hdl.handle.net/2115/75089

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アクセス権
open access
URI
https://hdl.handle.net/2115/75089
タイトル
Impact of the Characteristic Impedance of Coaxial Lines on the Sensitivity of a 750-MHz Electronically Tunable EPR Resonator
著者
Nakaoka, Ririko ; Komarov, Denis A. ; Matsumoto, Shingo ; Hirata, Hiroshi
著者名
Nakaoka, Ririko
著者名
Komarov, Denis A.
著者名
Matsumoto, Shingo
e-Rad_Researcher
60250958
著者名
Hirata, Hiroshi
言語
英語
発行日
2018-08
出版者
Springer
収録物名
Applied magnetic resonance
巻(号)
49(8)
ページ
853-867
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
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.
PISSN
0937-9347
NCID
AA10933363
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1007/s00723-018-1001-6