选择性激发技术在偶合常数精确测量中的应用  

APPLICATION OF SELECTIVE EXCITATION NMR TECHNIQUE WITH GAUSSIAN SOFT PULSE TO THE ACCURATE MEASUREMENT OF J COUPLING CONSTANTS

作　　者：缪希茄[1] 张晓东[1] 李丽云[1] 叶朝辉[1] 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,武汉430071

出　　处：《波谱学杂志》1997年第1期69-75,共7页Chinese Journal of Magnetic Resonance

基　　金：国家自然科学基金

摘　　要：采用基于简单Gaussian软脉冲的选择性激发技术来获得自旋系统的一维反相磁化分裂峰，并结合J－Doubling方法来精确测量该分裂峰的J偶合常数，对于重叠分裂峰或者线宽大、偶合分裂小的谱峰的J偶合常数的精确测量，该方法尤其适合．The selective excitation NMR technique with Gaussian soft pulse has been used to record one-dimensional antiphase magnetization spectrum. The antiphase spectrum can be employed further toaccurately measure J coupling constant by combining J - Doubling method. This measurement ofJ coupling constant is suitable particularly for overlapping multiplets and those with large spectrallinewidth and small coupling splitting.

关 键 词：软脉冲 选择性激发 偶合常数 核磁共振 

分 类 号：O482.532[理学—固体物理]