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Proceedings Paper

Array high-sensitivity room temperature coil system for SNMR detection in shallow depth
Author(s): Tingting Lin; Kunyu Xie; Siyuan Zhang; Jing Zhao; Jun Lin
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Paper Abstract

The noninvasive method of surface nuclear magnetic resonance (SNMR) is a geophysical technique that is directly sensitive to hydrogen protons, besides it can exploit the NMR phenomenon for a quantitative determination of the subsurface groundwater distribution. Traditionally, SNMR utilizes large surface coils for both transmitting excitation pulses and recording the groundwater response. While, in recent research, a low Tc-SQUIDs is taken as a new sensor to replace the large receiving coil (Rx), which performing the best sensitivity for the shallow depth. Nevertheless, SQUID is with the problems of flux trapping and operational difficulties. In this paper, we introduce a room temperature coil system. A Cu coil with diameter of 1 m and a low noise preamplifier was systematically investigated and reached a sensitivity of 0.2fT/Hz1/2.Four preamplifiers are chosen for optimizing the pickup coils. The resolution studies for the array coil systems were performed, and the optimum distance between the adjacent pickup coils to achieve a better experimental results especially for the shallow depth. Our study enable the further use of the room temperature coil for SNMR shallow depth detections.

Paper Details

Date Published: 23 January 2017
PDF: 8 pages
Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 1032211 (23 January 2017); doi: 10.1117/12.2265823
Show Author Affiliations
Tingting Lin, Jilin Univ. (China)
Kunyu Xie, Jilin Univ. (China)
Siyuan Zhang, Jilin Univ. (China)
Jing Zhao, Jilin Univ. (China)
Jun Lin, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 10322:
Seventh International Conference on Electronics and Information Engineering
Xiyuan Chen, Editor(s)

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