Development of an L-band rapid scan EPR digital console.
Development of an L-band rapid scan EPR digital console.
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DOI：
10.1016/j.jmr.2019.05.003
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发表时间：
2019-07
期刊：
影响因子：
--
通讯作者：
Tseytlin M
中科院分区：
文献类型：
--
作者：
Sato-Akaba H;Tseytlin M
详细描述了用于体内快速扫描电子顺磁共振（RS-EPR）光谱和成像的数字控制台的开发。该控制台采用现场可编程门阵列 (FGPA) 技术构建，允许在测量过程中实时控制谐振器和扫描磁场。通过实施数字反馈控制系统并使用电压可调电容器来实现自动谐振器调谐和匹配。采用带通子采样方法直接数字化约 1.2 GHz 载波频率的 EPR 信号。磁场扫描波形、激励 EPR 频率和采样时钟均在内部同步。全周期RS-EPR信号在FPGA中实时累积，没有任何时间间隙。其结果是消除了重新准备时间，在此期间不采集数据。本手稿中提出的设计占地面积小，成本相对较低。使用标准 LiNc-BuO 和 tempone-d16 样品对基于 FPGA 的 RS-EPR 系统进行了测试。 LiNc-BuO 样品的 RS-EPR 线宽与独立脉冲 EPR 测量结果一致。
The development of a digital console for in-vivo rapid scan electron paramagnetic resonance (RS-EPR) spectroscopy and imaging is described in detail. The console was build using field programmable gate array (FGPA) technology that permits real-time control of the resonator and scanning magnetic fields during the measurements. Automatic resonator tuning and matching are achieved by implementing a digital feedback control system and using voltage-tunable capacitors. A band-pass subsampling method is used to directly digitize EPR signals at the carrier frequencies of about 1.2 GHz. The magnetic field scan waveforms, excitation EPR frequency, and sampling clock are all internally synchronized. Full-cycle RS-EPR signals are accumulated in the FPGA in real time without any time gaps. The result is the elimination of the re-arm time, during which data are not acquired. The proposed design in this manuscript has a small footprint and is relatively low cost. The FPGA-based RS-EPR system was tested using standard LiNc-BuO and tempone-d16 samples. The RS-EPR linewidth of the LiNc-BuO sample was consistent with an independent pulsed EPR measurement.
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影响因子：
2.2
作者：
Buchanan, Laura A.;Woodcock, Lukas B.;Eaton, Gareth R.
通讯作者：
Eaton, Gareth R.
DOI：
10.1016/j.jmr.2017.02.013
发表时间：
2017-07
期刊：
Journal of magnetic resonance (San Diego, Calif. : 1997)
影响因子：
--
作者：
Eaton SS;Shi Y;Woodcock L;Buchanan LA;McPeak J;Quine RW;Rinard GA;Epel B;Halpern HJ;Eaton GR
通讯作者：
Eaton GR
影响因子：
2.2
作者：
Ahmad, R.;Som, S.;Potter, L. C.
通讯作者：
Potter, L. C.
DOI：
10.1002/cmr.b.20161
发表时间：
2010-04-01
影响因子：
0.9
作者：
Rinard, George A.;Quine, Richard W.;Eaton, Gareth R.
通讯作者：
Eaton, Gareth R.
影响因子：
5.4
作者：
VAUGHAN, RG;SCOTT, NL;WHITE, DR
通讯作者：
WHITE, DR