大口径高均匀度核磁共振Halbach磁体研究

刘万震, 陈方, 陈黎, 王佳鑫, 程鑫, 易鹏, 张志, 刘朝阳

Research on Large-bore and High Homogeneity Halbach Magnet for Nuclear Magnetic Resonance

LIU Wanzhen, CHEN Fang, CHEN Li, WANG Jiaxin, CHENG Xin, YI Peng, ZHANG Zhi, LIU Chaoyang

图13 (a)直径100 mm球形目标区域与Φ 25 mm × H 25 mm测试区域关系示意图；(b)匀场前后，Φ 25 mm × H 25 mm硫酸铜水溶液1H NMR信号对比图（进行归一化处理）；(c)信号峰局部放大图

Fig. 13 (a) Schematic illustrating the relationship between the ROI and the Φ 25 mm × H 25 mm test region; (b) Comparison of the NMR signals from a Φ 25 mm × H 25 mm CuSO₄ aqueous solution before and after shimming (normalized); (c) Zoomed-in view of the peak region in (b)