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组合脉冲宽带激发2H-平均哈密顿理论计算研究Hot!

DOI: 10.11938/cjmr20150219, PP. 373-381

Keywords: 固体核磁共振,四级核回波,氘谱,组合脉冲,相位循环

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Abstract:

四级核回波实验通常需要射频脉冲能够激发谱宽超过100kHz的信号.在最近的研究中,作者发现组合脉冲COM-II(901809013545)能够在氘核的四级核回波实验中实现宽带激发.此外,作者还结合了八步相位循环的方法,有效消除了由有限脉宽效应造成的谱图扭曲现象.利用了平均哈密顿原理,对该方法进行了理论计算研究.作者采用了自旋为1的矩阵算符,通过计算解释了八步相位循环能够消除谱图扭曲的原因.

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