Overhauser磁力仪探头激发频率测试仪研制

刘欢, 董浩斌, 葛健, 白冰洁, 袁志文, 赵志卓, 刘咏华, 朱俊, 张海洋

电子学报 ›› 2017, Vol. 45 ›› Issue (5) : 1272-1280.

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电子学报 ›› 2017, Vol. 45 ›› Issue (5) : 1272-1280. DOI: 10.3969/j.issn.0372-2112.2017.05.034
科研通信

Overhauser磁力仪探头激发频率测试仪研制

  • 刘欢1,2,3, 董浩斌2,3, 葛健2,3, 白冰洁1, 袁志文3, 赵志卓3, 刘咏华3, 朱俊3, 张海洋3
作者信息 +

Research and Developed of the Test Apparatus for Measuring the Excitation Frequency of Overhauser Magnetometer Probe

  • LIU Huan1,2,3, DONG Hao-bin2,3, GE-Jian2,3, BAI Bing-jie1, YUAN Zhi-wen3, ZHAO Zhi-zhuo3, LIU Yong-hua3, ZHU Jun3, ZHANG Hai-yang3
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文章历史 +

摘要

Overhauser磁力仪探头中自由基溶液激发频率的精度直接决定探头输出拉莫尔旋进信号的质量.为准确获得激发频率,本文设计了一种Overhauser磁力仪探头激发频率测试仪.针对目前测试设备存在的分辨率较低、操作复杂等问题,采用高分辨率DDS作为可控射频信号源;运用ADC同步采集技术,结合归一化数据处理方法有效解决50MHz~100MHz范围内幅频特性曲线不平坦的问题;采用射频功放、小信号放大作为辅助测量通道,实现仪器的标准、辅助测量一体化.通过对探头谐振腔的等效电路进行仿真,得到微调电容对探头谐振频率和品质因数的影响程度,并用商用探头进行测试,进一步验证仿真结果;同时得到自由基溶液的极化度与射频激发功率、激发时间的关系.最终实验结果表明,利用本文研制的Overhauser磁力仪探头激发频率测试仪,能够准确测量自由基溶液的激发频率、频率带宽以及品质因数,还可用于在磁力仪设计过程中对激发功率和激发时间的确定,为进一步设计Overhauser磁力仪奠定了基础.

Abstract

The excitation frequency of radical solution in Overhauser magnetometer probe directly determines the quality of larmor precession signal,which is generated by the probe.In order to obtain the excitation frequency accurately,a test apparatus for measuring the excitation frequency of Overhauser magnetometer probe was designed.In view of the existing problems of present test apparatuses,such as lower resolution,complex operation and so on.This paper adopts a high-resolution DDS as the controllable RF signal source; using the ADC synchronization acquisition technology,combined with the data processing method of normalization,and the uneven problem of the amplitude-frequency characteristic curve in the range of 50MHz~100MHz has been solved effectively; moreover,by adopting the RF power amplifier,weak signal amplification as an auxiliary measurement channel,the apparatus's integration of standard measurement and aided measurement has been achieved.The equivalent circuit of the probe's resonant cavity is simulated,and the effect degree of the adjustable capacitor to the resonant frequency and quality factor of the Overhauser magnetometer probe is obtained.The simulated results are further verified by testing the curve of cavity resonance of the commercial probe under different parameters' conditions.Meanwhile,the relationship between the polarization degree of the radical solution and RF excitation power & time are also obtained.The test method and results are given and the experimental data are analyzed.Finally,the experiment results demonstrate that the excitation frequency of the radical solution,excitation frequency bandwidth and quality factor can be found accurately by using this apparatus.And the apparatus can be also used for the determination of excitation power and excitation time in the process of magnetometer design,which lay the foundation for the design of Overhauser magnetometer in the future.

关键词

Overhauser磁力仪 / 动态核极化 / 自由基 / 拉莫尔旋进

Key words

Overhauser magnetometer / dynamic nuclear polarization / radical solution / Larmor procession

引用本文

导出引用
刘欢, 董浩斌, 葛健, 白冰洁, 袁志文, 赵志卓, 刘咏华, 朱俊, 张海洋. Overhauser磁力仪探头激发频率测试仪研制[J]. 电子学报, 2017, 45(5): 1272-1280. https://doi.org/10.3969/j.issn.0372-2112.2017.05.034
LIU Huan, DONG Hao-bin, GE-Jian, BAI Bing-jie, YUAN Zhi-wen, ZHAO Zhi-zhuo, LIU Yong-hua, ZHU Jun, ZHANG Hai-yang. Research and Developed of the Test Apparatus for Measuring the Excitation Frequency of Overhauser Magnetometer Probe[J]. Acta Electronica Sinica, 2017, 45(5): 1272-1280. https://doi.org/10.3969/j.issn.0372-2112.2017.05.034
中图分类号: TH762.3   

参考文献

[1] Tumanski S.Modern magnetic field sensors-a review[J].Preglad Elektrotechniczny,2013,10(13):1-10.
[2] Ge J,Dong H B,Liu H,et al.Overhauser geomagnetic sensor based on the dynamic nuclear polarization effect for magnetic prospecting[J].Sensors,2016,16(6):806.
[3] Hatsukade Y,Abe T,Tsunaki S,et al.Application of ultra-low field HTS-SQUID NMR/MRI to contaminant detection in food[J].IEEE Transactions on Applied Superconductivity,2013,23(3):1602204.
[4] Winslow R M,Johnson C L,Anderson B J,et al.Observations of Mercury's northern cusp region with Messenger's Magnetometer[J].Geophysical Research Letters,2012,39(8):L08112.
[5] Denisov A Y,Sapunov V A,Rubinstein B.Broadband mode in proton-precession magnetometers with signal processing regression methods[J].Measurement Science and Technology,2014,25(5):055103.
[6] Choi S,Kim C,Park C,et al.Estimation of hydrothermal deposits location from magnetization distribution and magnetic properties in the North Fiji Basin[A].Proceedings of the AGU Fall Meeting Abstracts[C].San Francisco,America,2013.1087.
[7] Shim J H,Lee S J,Hwang S,et al.Proton spin-echo magnetometer:a novel approach for magnetic field measurement in residual field gradient[J].Metrologia,2015,52(4):496-501.
[8] Sapunov V A,Rasson J,Denisov A,et al.Theodolite-borne vector Overhauser magnetometer:Dimover[J].Earth Planets and Space,2006,58(6):711-716.
[9] 谭超,董浩斌,葛自强.OVERHAUSER磁力仪激发接收系统设计[J].仪器仪表学报,2010,31(8):1867-1872. Tan Chao,Dong Haobin,Ge Ziqiang.Overhauser magnetometer excitation and receiving system design[J].Chinese Journal of Scientific Instrument,2010,31(8):1867-1872.(in Chinese)
[10] 董浩斌,谭超,董茜,等.一种Overhauser磁力仪[P].中国专利:201010147845.5,2010-04-09.
[11] 刘欢,董浩斌,葛健,等.基于Overhauser效应的磁场梯度探测器[J].仪器仪表学报,2015,36(3):592-600. Liu Huan,Dong Haobin,Ge Jian,et al.Magnetic field gradient detector based on the nuclear Overhauser effect[J].Chinese Journal of Scientific Instrument,2015,36(3):592-600.(in Chinese)
[12] 陈斯文,赵华,廖怀哲,等.空间用Overhauser磁力仪[A].中国空间科学学会第七次学术年会[C].大连,中国,2009.102.
[13] 张爽,周前伟,陈曙东,等.基于DSP的JPM-1型质子磁力仪研制[J].吉林大学学报(信息科学版),2014,32(5):511-517. Zhang Shuang,Zhou Qianwei,Chen Shudong,et al.Design of JPM-1 proton magnetometer based on DSP[J].Journal of Jilin University(Information Science Edition),2014,32(5):511-517.(in Chinese)
[14] Zheng D,Zhang S,Guo X,et al.An improved RF circuit for Overhauser magnetometer excitation[A].Proceedings of the International Conference on Radiation Detectors:Systems and Applications XVI[C].San Diego,California,United States,2015.95950M1-8.
[15] 张爽,何家泷,陈曙东,等.JOM-1型Overhauser磁力仪研制[J].吉林大学学报(信息科学版),2015,33(4):409-415. Zhang Shuang,He Jialong,Chen Shudong,et al.Development of JOM-1 model overhauser magnetometer[J].Journal of Jilin University(Information Science Edition),2015,33(4):409-415.(in Chinese)
[16] 葛健,赵志卓,董浩斌,等.直流脉冲极化质子旋进磁力仪磁场传感器的设计[J].仪器仪表学报,2014,35(4):850-858. Ge Jian,Zhao Zhizhuo,Dong Haobin,et al.Design of the magnetic field sensor for proton precession magnetometer based on DC pulse polarization[J].Chinese Journal of Scientific Instrument,2014,35(4):850-858.(in Chinese)
[17] 孙明,龚沈光,周骏,等.运动船舰切割地磁场在海水中产生的电场计算[J].电子学报,2003,31(3):464-467. Sun Ming,Gong Shenguang,Zhou Jun,et al.Calculation of the electric field generated by vessel moving across geomagnetic field in seawater[J].Acta Electronica Sinica,2003,31(3):464-467.(in Chinese)
[18] Yang A L,Yang G Q,Cai X M,et al.A laser pump-re-pump atomic magnetometer[J].Chinese Physics B,2013,22(12):120702.
[19] Lingwood M D,Ivanov I A,Cote A R,et al.Heisenberg spin exchange effects of nitroxide radicals on Overhauser dynamic nuclear polarization in the low field limit at 1.5 mT[J].Journal of Magnetic Resonance,2010,204(1):56-63.
[20] Seki Y,Kandori A,Hashizume T,et al.Microtesla NMR Measurement of Protons and Fluorine Nuclei Using a SQUID Gradiometer[J].IEEE Transaction Applied Superconductivity,2013,23(3):1600904.
[21] Lobo N P,Ramanathan K V.Combining adiabatic and Hartmann-Hahn cross-polarization for sensitivity enhancement in solid state separated local field 2D-NMR experiments of partially ordered systems[J].Chemical Physics Letters,2012,536(20):155-161.
[22] Martin R V,Nazarre D J,Perigo E A.Traceability of dynamic magnetic fields by NMR magnetometry[A].Proceedings of the IEEE Conference on Precision Electromagnetic Measurements[C].Rio de Janeiro,Brazil,2014.356-357.
[23] 陈文升.核磁共振地球物理仪器原理[M].北京:地质出版社,1992.53-61.
[24] Qiu Y,Liu C,Zhang S L,et al.A SQUID gradiometer module with large junction shunt resistors[J].Chinese Physics B,2014,23(8):088503.
[25] 徐立,李斌,杨中海.一种基于高阶矢量叠层基函数去除复杂谐振腔三维有限元仿真中的伪直流模式的新方法[J].电子学报,2012,6(6):1171-1176. Xu Li,Li bin,Yang Zhonghai.A DC modes in 3-d finite-element modeling of complex cavity based on higher-order vector hierarchical basis[J].Acta Electronica Sinica,2012,6(6):1171-1176.(in Chinese)
[26] 马春燕,袁学松,韩煜,等.0.6THz三次谐波回旋管的研究[J].电子学报,2012,40(3):495-499. Ma Chunyan,Yuan Xuesong,Han Yu,et al.Study of a 3rd-harmonic 0.6THz gyrotron[J].Acta Electronica Sinica,2012,40(3):495-499.(in Chinese)
[27] 王月明,孔令富,李英伟.电磁相关法流量测量传感器励磁线圈轴向长度设计研究[J].电子学报,2014,42(5):978-981. Wang Yueming,Kong Lingfu,Li Yingwei.Designstudy on excitation coil axial length of electromagnetic correlation method flow measurement sensor[J].Acta Electronica Sinica,2014,42(5):978-981.(in Chinese)

基金

国家自然科学基金 (No.41474158,No.41504137); 国家重大科学仪器设备开发专项 (No.2014YQ100817); 近地面探测技术重点实验室开放课题 (No.TCGZ2015A008); 武汉市科技局应用基础研究计划项目 (No.2016010101010013)

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