Enhancement of nuclear magnetic resonance in microtesla magnetic field with prepolarization field detected with high-Tc superconducting quantum interference device

被引：46
|
作者：
Yang, Hong-Chang [1 ]
Liao, Shu-Hsien
Horng, Herng-Er
Kuo, Shing-Ling
Chen, Hsin-Hsien
Yang, S. Y.
机构：
[1] Natl Taiwan Univ, Dept Phys, Taipei 116, Taiwan
[2] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
[3] Natl Taiwan Normal Univ, Inst Electroopt Sci & Technol, Taipei 116, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 25期
关键词：
D O I：
10.1063/1.2216904
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We applied prepolarization field and high-T-c superconducting quantum interference device (SQUID) detector to enhance nuclear magnetic resonance signal in a microtesla magnetic field. The minimum measuring magnetic field is 8.9 mu T at which the proton resonance frequency is 380 Hz. The specificity instrumentation and the difficulty of using a high-T-c SQUID with prepolarization field were investigated. We applied gradient field to perform one-dimensional proton imaging in a microtesla magnetic field. Additionally, low field high-T-c SQUID-based NMR systems are promising in biomagnetic research due to its use, for example, in imaging with hyperpolarized noble gas. (c) 2006 American Institute of Physics.
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