摘要
核磁共振中的磁体设计有许多方案,但是要使磁体体积小、重量轻、均匀区大、稳定性好,将面临一系列的问题.而这些问题的解决主要依赖于电磁场计算。文中首先阐述这些问题,然后对方案进行优化分析计算,从中找出一个最佳的解决方案。采用本方案研制出来磁体,我们研制成功了便携式核磁共振岩样分析仪。经过多次的现场实验测试表明由该磁体构成的磁共振岩样分析仪的稳定性高、重复性好、满足现场恶劣的环境要求。
There are many ways of design for the magnets used in nuclear magnetic reso-
nance. However, it is always challenging to make the magnet small, light, stable and
having large volume with uniform magnetic field. Solution to this challenge lies in accu-
rate computation of the electromagnetism field. In this paper, we first briefly reviewed
the problerns in magnet design, and then showed how to optimize the different ways of
magnet design. An optimized magnet design was proposed, based on which a portable
NMR cock analyzer was built successfully. The results from a number of on site tests
showed that the portable NMR rock analyzer we built has high stability and good repro-
ducibility, and is suitable for working under severe conditions.
出处
《波谱学杂志》
CAS
CSCD
北大核心
2004年第3期337-344,共8页
Chinese Journal of Magnetic Resonance
关键词
核磁共振
永磁磁体
电磁场
稳定性
重复性
NMR
permanent magnet
electromagnetic field
stability
reproducibility
