A high-frequency electron paramagnetic resonance spectrometer for multi-dimensional, multi-frequency, and multi-phase pulsed measurements
A high-frequency electron paramagnetic resonance spectrometer for multi-dimensional, multi-frequency, and multi-phase pulsed measurements
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DOI：
10.1063/1.4889873
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发表时间：
2014-07-01
影响因子：
1.6
通讯作者：
Takahashi, S.
中科院分区：
文献类型：
--
作者：
Cho, F. H.;Stepanov, V.;Takahashi, S.
我们描述了高频电子顺磁共振(EPR)和脉冲电子-电子双共振(PELDOR)光谱的仪器。该仪器工作在107-120 GHz和215-240 GHz的频率范围内，在0-12.1T的磁场范围内。光谱仪由高频高功率固态源、准光学系统、相敏探测系统、非低温超导磁体和He-4低温恒温器组成，可实现多频连续波EPR谱和几百纳秒脉冲的脉冲EPR测量。在这里，我们讨论了仪器的设计细节和脉冲EPR灵敏度。我们还介绍了该仪器在独特的实验中的性能，包括PELDOR谱在绝缘电子自旋系统中探测关联以及动态去耦合技术在绝缘固态系统中扩展电子自旋的自旋相干性的应用。(C)2014 AIP出版有限责任公司。
We describe instrumentation for a high-frequency electron paramagnetic resonance (EPR) and pulsed electron-electron double resonance (PELDOR) spectroscopy. The instrumentation is operated in the frequency range of 107-120 GHz and 215-240 GHz and in the magnetic field range of 0-12.1 T. The spectrometer consisting of a high-frequency high-power solid-state source, a quasioptical system, a phase-sensitive detection system, a cryogenic-free superconducting magnet, and a He-4 cryostat enables multi-frequency continuous-wave EPR spectroscopy as well as pulsed EPR measurements with a few hundred nanosecond pulses. Here we discuss the details of the design and the pulsed EPR sensitivity of the instrumentation. We also present performance of the instrumentation in unique experiments including PELDOR spectroscopy to probe correlations in an insulating electronic spin system and application of dynamical decoupling techniques to extend spin coherence of electron spins in an insulating solid-state system. (C) 2014 AIP Publishing LLC.