组合脉冲宽带激发2H-平均哈密顿理论计算研究
O482.53; 四级核回波实验通常需要射频脉冲能够激发谱宽超过100 kHz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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Published in | 波谱学杂志 Vol. 32; no. 2; pp. 373 - 381 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
华东师范大学物理系,上海市磁共振重点实验室,上海 200062
2015
UCCS,University Lille North of France,Villeneuve d’Ascq 59652%Department of Physics,Hunter College,New York 10065%Center for Advanced Radiological Sciences,Division of Nuclear Medicine and Molecular Imaging Physics,Department of Radiology,Harvard Medical School and Massachusetts General Hospital,Boston,02114%华东师范大学物理系,上海市磁共振重点实验室,上海 200062%Physics Department,Brooklyn College,New York 11210 |
Subjects | |
Online Access | Get full text |
ISSN | 1000-4556 |
DOI | 10.11938/cjmr20150219 |
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Summary: | O482.53; 四级核回波实验通常需要射频脉冲能够激发谱宽超过100 kHz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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Bibliography: | solid-state NMR;quadrupolar echo;deuterium;composite pulses;phase cycling SHEN Ming, ROOPCHAND Rabia, MANANGA Eugene S, AMOUREUX Jean-paul, CHENQun, BOUTIS Gregory S, HU Bing-wen (1. Physics Department & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062; 2. Department of Physics, Hunter College, New York 10065; 3. Center for Advanced Radiological Sciences, Division of Nuclear Medicine and Molecular Imaging Physics Department of Radiology, Harvard Medical School and Massachusetts General Hospital, Boston, 02114; 4. Physics Department, Brooklyn College, New York NY I 1210; 5. UCCS, University Lille North of France, Villeneuve d'Ascq 59652) Quadrupolar echo NMR spectroscopy of solids often requires RF pulse excitation that covers spectral widths exceeding 100 kHz. In a recent work we found out that a composite pulse COM-II(901809013545),provided robust broadband excitation for deuterium quadrupolar echo spectroscopy. Moreover, when combined with an 8-step phase cycle, spe |
ISSN: | 1000-4556 |
DOI: | 10.11938/cjmr20150219 |