Design and Realization of an Open EPR Resonator at ${X}$ -Band Frequencies
Design and Realization of an Open EPR Resonator at ${X}$ -Band Frequencies
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${X}$ 频段开放式 EPR 谐振器的设计和实现
DOI：
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发表时间：
2019
影响因子：
2.1
通讯作者：
P. Fattibene
中科院分区：
文献类型：
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作者：
S. Pisa;S. Della Monaca;L. Di Trocchio;L. Ficcadenti;A. Mostacci;E. Pittella;G. Sacco;P. Fattibene
设计并构建了与<inline-formula> <tex-math notation="LaTeX">$X$ </tex-math></inline-formula>波段商用电子顺磁共振光谱仪兼容的开放式谐振器。在设计过程中，通过使用<斜体>临时</斜体>定义的腔体品质因数来比较不同形状和尺寸的谐振器。设计了在 TE<sub>X11</sub> 模式下工作的三个圆柱形腔，其中 <inline-formula> <tex-math notation="LaTeX">$X = 1$ </tex-math></inline-formula>、2、3，同时考虑了用于微波磁场泄漏的耦合光圈和狭缝。腔体进一步改善了 100 kHz 调制磁场的均匀性。然后建立一个空腔，在 TE<sub>111</sub> 模式下运行；测量的电磁参数与模拟结果非常吻合。最后，将空腔插入商业 <inline-formula> <tex-math notation="LaTeX">$X$ </tex-math></inline-formula> 带光谱仪中，并对三个顺磁性样品进行了测量：2, 2-二苯基-1-三硝基苯肼以及辐照的丙氨酸和骨骼。
An open resonator compatible with <inline-formula> <tex-math notation="LaTeX">$X$ </tex-math></inline-formula>-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 <italic>ad hoc</italic> defined cavity figures of merit. Three cylindrical cavities operating on TE<sub>X11</sub> modes with <inline-formula> <tex-math notation="LaTeX">$X = 1$ </tex-math></inline-formula>, 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 TE<sub>111</sub> mode; the measured electromagnetic parameters were in a good agreement with simulations. Finally, the cavity was inserted in a commercial <inline-formula> <tex-math notation="LaTeX">$X$ </tex-math></inline-formula>-band spectrometer, and measurements have been performed on three paramagnetic samples: 2, 2-diphenyl-1-picrylhydrazyl, and irradiated alanine and bone.
影响因子：
2
作者：
Flood AB;Nicolalde RJ;Demidenko E;Williams BB;Shapiro A;Wiley AL Jr;Swartz HM
通讯作者：
Swartz HM