A high-frequency electron paramagnetic resonance spectrometer for multi-dimensional, multi-frequency, and multi-phase pulsed measurements

被引：25
作者：
Cho, F. H. [1 ]
Stepanov, V. [2 ]
Takahashi, S. [1 ,2 ]
机构：
[1] Univ So Calif, Dept Phys, Los Angeles, CA 90089 USA
[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 07期
关键词：
SPIN-RESONANCE; SPECTROSCOPY; TIME; ECHO;
D O I：
10.1063/1.4889873
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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.
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页数：7
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