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arXiv 2007.09424physics.ins-detphysics.atom-ph
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梯度自旋回波增强质子旋进磁强计：一种测量磁场梯度的新系统

Gradient spin echo enhanced proton precession magnetometer: a novel system for field gradient measurement

Farrokh Sarreshtedari, Faeze Mahboubian, Mohammad Hadi Sardari

备注：
6 pages, 7 figures
发表信息：
Review of Scientific Instruments 91, 075105 (2020)
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摘要：

梯度自旋回波增强质子旋进磁力仪是一种新型的除测量磁场外还能测量背景场一阶梯度的磁力仪系统。该系统包括一个传统的质子旋进磁力仪配备麦克斯韦线圈对和电子，允许进行梯度自旋回波实验。在梯度自旋回波过程中，基于背景梯度场、开关梯度场和开关反转时间，自旋回波信号在理论上可预测的时间形成。这种方法的重要优点在于，与测量两个不同点之间的磁场差的常规质子梯度仪相比，梯度自旋回波增强质子磁力仪测量在测量磁场的相同位置处的场梯度。实验结果表明，在-0.25 ~+0.25UNFT/m的梯度场范围内，用该系统测量背景梯度场的平均均方根误差为0.02μT/m。通过对该系统的优化，可以显著减小上述误差，并且该仪器可以用于许多不同的应用。

英文摘要：

Gradient spin echo enhanced proton precession magnetometer is a novel system which can measure the first order gradient of the background field in addition to the magnetic field. The system includes a conventional proton precession magnetometer equipped with Maxwell coil pair and electronics which allow to conduct the gradient spin echo experiment. In gradient spin echo process, based on the background gradient field, the switching gradient field and the switching reversal time, the spin echo signal forms at a theoretically predictable time. The important advantage of this approach is that in contrast to conventional proton gradiometers which measure the magnetic field difference between two different points, gradient spin echo enhanced proton magnetometer measures the field gradient at the same position where the magnetic field is being measured. It is shown that by using this system the background gradient field is measured with an average root mean square error of 0.02μT/m for gradient fields in the range of -0.25μT/m to +0.25μT/m. By optimization of this system, the mentioned error could be significantly decreased and the instrument could be used for many different applications.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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