A field-sweep/field-lock system for superconducting magnets - Application to high-field EPR
A field-sweep/field-lock system for superconducting magnets - Application to high-field EPR
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DOI：
10.1016/j.jmr.2006.09.012
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发表时间：
2006-12-01
影响因子：
2.2
通讯作者：
Griffin, Robert G.
中科院分区：
文献类型：
--
作者：
Maly, Thorsten;Bryant, Jeff;Griffin, Robert G.
我们描述了一种用于超导磁体的场锁定/场扫描系统。该系统是基于一个商业上可用的字段映射单元和定制设计的宽带H-1 NMR探头。小水样的NMR信号用于反馈回路，以高精度设置和控制磁场。当前的仪器配置允许+/- 0.4 T的场扫描和高达10（-5）T（0.1 G）的分辨率，并且在高场电子顺磁共振（EPR）应用中证明了系统的性能。该系统还应在其他需要精确和可再现的磁场扫描的实验中使用，如DNP，ENDOR或PELDOR。(c)2006年爱思唯尔公司All rights reserved.
We describe a field-lock/field-sweep system for the use in superconducting magnets. The system is based on a commercially available field mapping unit and a custom designed broad-band H-1 NMR probe. The NMR signal of a small water sample is used in a feedback loop to set and control the magnetic field to high accuracy. The current instrumental configuration allows field sweeps of +/- 0.4 T and a resolution of up to 10(-5) T (0.1 G) and the performance of the system is demonstrated in a high-field electron paramagnetic resonance (EPR) application. The system should also be of utility in other experiments requiring precise and reproducible sweeps of the magnetic field such as DNP, ENDOR or PELDOR. (c) 2006 Elsevier Inc. All rights reserved.