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Aqueous sample holders for high-frequency electron spin resonance

被引：47
作者：
Barnes, JP
Freed, JH
机构：
[1] Baker Laboratory of Chemistry, Cornell University, Ithaca
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 1997年 / 68卷 / 07期
关键词：
D O I：
10.1063/1.1148205
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A quasioptical approach is utilized to design a resonator and sample holder for aqueous samples for high-frequency (250 GHz) electron spin resonance (ESR) spectroscopy. A disk shaped sample geometry was chosen to match the field contours of the fundamental mode in a Fabry-Perot resonator. A transmission-line analysis is used to determine the optimum sample geometry while taking into account diffractive effects of the sample and the sample holder on the far infrared (FIR) radiation field. FIR-ESR spectra of several aqueous solutions of nitroxide spin labels, including membrane vesicles and a labeled protein, are shown to demonstrate the success of the technique. (C) 1997 American Institute of Physics.
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收藏
页码：2838 / 2846
页数：9
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