Design and Realization of an Open EPR Resonator at X-Band Frequencies

被引：3

作者：

Pisa, Stefano ^{[1
]}

Della Monaca, Sara ^{[2
]}

Di Trocchio, Luigi ^{[1
]}

Ficcadenti, Luca ^{[3
]}

Mostacci, Andrea ^{[3
]}

Pittella, Erika ^{[1
]}

Sacco, Giulia ^{[1
]}

Fattibene, Paola ^{[2
]}

机构：

[1] Sapienza Univ Rome, Dept Informat Engn Elect & Telecommun, I-00184 Rome, Italy

[2] Ist Super Sanita, Core Facil, I-00161 Rome, Italy

[3] Sapienza Univ Rome, Dept Basic & Appl Sci Engn, I-00161 Rome, Italy

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2019年 / 55卷 / 02期

关键词：

Cavity resonators; electron paramagnetic resonance (EPR); Helmholtz coils; ELECTRON-PARAMAGNETIC-RESONANCE; TOOTH ENAMEL; DOSIMETRY;

D O I：

10.1109/TMAG.2018.2886148

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An open resonator compatible with X-band commercial spectrometers for electron paramagnetic resonance was designed and built. In the design process, resonators with different shapes and dimensions were compared by using ad hoc defined cavity figures of merit. Three cylindrical cavities operating on TEX11 modes with X = 1, 2, 3, were designed taking into account a coupling iris and a slit for microwave magnetic field leakage. The cavities were further improved toward the homogeneity of the 100 kHz modulation magnetic field. A cavity was then built, operating on TE111 mode; the measured electromagnetic parameters were in a good agreement with simulations. Finally, the cavity was inserted in a commercial X-band spectrometer, and measurements have been performed on three paramagnetic samples: 2, 2-diphenyl-1-picrylhydrazyl, and irradiated alanine and bone.

引用

页数：10

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