A simple wide-band gradiometer for operation in very low background field
✍ Scribed by C.P. Bidinosti; Z. Xian; M.E. Hayden
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 301 KB
- Volume
- 37B
- Category
- Article
- ISSN
- 1552-5031
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A simple gradiometer, capable of sensing submicrotesla changes in magnetic field with 10‐μs resolution, is constructed from a pair of low‐cost, wide‐band Hall‐effect sensors output to a voltage preamplifier and digital storage oscilloscope. The linear operational range of the sensors (±7.5 mT) limits typical applications, such as gradient coil development and testing, to environments where background fields are very low. The gradiometer is ideal for characterizing gradient field rise times and waveforms in this limit and applications pertinent to very‐low‐field nuclear magnetic resonance and magnetic resonance imaging are presented. © 2010 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 37B: 1–6, 2010