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本文提出一个Z回波核磁共振(NMR)脉冲序列,可以获得三能级体系的纯偶极或纯四极谱。Z回波NMR谱不仅与化学位移各向异性无关,而且在强射频场条件下,与射频场非均匀性无关。该方法明显优于章动NMR技术。以上结论经过理论分析和实验结果的验证。A Z echo NMR pulse sequence is proposed for using in measurement of pure dipole or quadrupole spectrum. The Z echo NMR powder lineshape is not only independent of chemical shielding anisotropy but also, under strong radio-frequency field condition, independent of rf field inhomogeneity. This method is superior obviously to nutation NMR technique. The conclusions were analyzed theoretically and confirmed by experimental results.
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