| 用首尾减半法改善DANTE序列边瓣的抑制 |
| |
| 引用本文： | 杨培强,李延安.用首尾减半法改善DANTE序列边瓣的抑制[J].波谱学杂志,1996,13(2):129-136. |
| |
| 作者姓名： | 杨培强 李延安 |
| |
| 作者单位： | 1. 上海华东师范大学分析测试中心, 上海 200062;2. 上海石油化工研究院核磁共振室, 上海 201208 |
| |
| 基金项目： | 国家自然科学基金，国家教委博士点基金 |
| |
| 摘 要： | 用Dante脉冲序列作选择激励的缺点是它的激励边瓣太大.对于强峰存在的谱在选择激励其他峰时残留部分有时很大而引起对相干转移的误判.这里提出把Dante序列中首尾两个脉冲宽度减半的方法可以把抑制比降低至原来残留部分的1/50左右.
|
| 关 键 词： | NMR 首尾减半Dante序列 边瓣抑制 |
| 收稿时间： | 1995-07-13 |
SUPPRESSION OF SIDE-BANDS BY HALF OF THE FIRST AND THE LAST PULSES WIDTH IN DANTE SEQUENCE |
| |
| Yang Peiqiang,Li Yanan and Huang Yongren.SUPPRESSION OF SIDE-BANDS BY HALF OF THE FIRST AND THE LAST PULSES WIDTH IN DANTE SEQUENCE[J].Chinese Journal of Magnetic Resonance,1996,13(2):129-136. |
| |
| Authors: | Yang Peiqiang Li Yanan and Huang Yongren |
| |
| Institution: | 1. Analysis Center, East Normal University, Shanghai 200062;2. NMR Laboratoty, Shanghai Petrochemical Institute, Shanghai 201208 |
| |
| Abstract: | The defect for using Dante sequence as a band-pass selective excitation pulse is the strong remained side-bands,when a weak peak is excited in a spectrum with the other strong peaks.Sometimes,this remained part of the strong peak is still very large,which will lead to make a mistaken assignment for the coherence transference. In this report, we suggest to reduce the width of the first and last pulse in Dante sequence to a half.By means of this method,the remained peak can be suppressed to about 1/50. |
| |
| Keywords: | NMR Dante sequence with the half width of the first pulse and the last one Suppression of side band |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《波谱学杂志》浏览原始摘要信息 |
| 点击此处可从《波谱学杂志》下载免费的PDF全文 |
