DYNAMIC THEORY OF CROSS-POLARIZATION IN SOLIDS UNDER HIGH-SPEED MAGIC-ANGLE-SPINNING

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	DYNAMIC THEORY OF CROSS-POLARIZATION IN SOLIDS UNDER HIGH-SPEED MAGIC-ANGLE-SPINNING
	DING, SW ; YE, CH ; MCDOWELL, CA
刊名	JOURNAL OF MAGNETIC RESONANCE SERIES A
	1994-07-01
卷号	109 期号:1 页码:6-13
文献子类	Article
英文摘要	A general dynamic-theoretical analysis of cross polarization (CP) in solids under high-speed magic-angle spinning, based on more precise and consistent definitions of some dynamic and thermodynamic quantities, is presented. Two cases should be distinguished: slow correlation and fast correlation, corresponding to the two situations where tau(c)(D) greater than or equal to T-IS and tau(c)(D) less than or equal to T-IS, respectively. The fast-correlation condition leads to the prediction that there will occur a monotonic change of magnetization for both rare and abundant nuclei, while in the slow-correlation case, the oscillation of the magnetization prevails in the sideband-matching case. The cross-polarization dynamics under the center-matching regime are quite different from the situation under the sideband-matching condition. The effect of molecular motion on CP dynamics is analyzed. The Hartmann-Hahn matching curve is also discussed and its asymmetric characteristics are explained. From the theoretical analysis, it emerges that CP at high spinning speeds is more effective under the sideband-matching condition. (C) 1994 Academic Press,Inc.
WOS关键词	INTEGER QUADRUPOLAR NUCLEI ; PROTON-ENHANCED NMR ; DILUTE SPINS ; LINE-SHAPES ; MAS ; SPECTROSCOPY ; RELAXATION ; RESONANCE ; DIFFUSION ; SPECTRA
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:A1994NW83200002
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/12072]
专题	武汉物理与数学研究所_2011年以前论文发表（包括2011年）
作者单位	1.CHINESE ACAD SCI,WUHAN INST PHYS,MAGNET RESONANCE & ATOM & MOLEC PHYS LAB,WUHAN 430071,PEOPLES R CHINA 2.UNIV BRITISH COLUMBIA,DEPT CHEM,VANCOUVER V6T 1Z1,BC,CANADA
推荐引用方式 GB/T 7714	DING, SW,YE, CH,MCDOWELL, CA. DYNAMIC THEORY OF CROSS-POLARIZATION IN SOLIDS UNDER HIGH-SPEED MAGIC-ANGLE-SPINNING[J]. JOURNAL OF MAGNETIC RESONANCE SERIES A,1994,109(1):6-13.
APA	DING, SW,YE, CH,&MCDOWELL, CA.(1994).DYNAMIC THEORY OF CROSS-POLARIZATION IN SOLIDS UNDER HIGH-SPEED MAGIC-ANGLE-SPINNING.JOURNAL OF MAGNETIC RESONANCE SERIES A,109(1),6-13.
MLA	DING, SW,et al."DYNAMIC THEORY OF CROSS-POLARIZATION IN SOLIDS UNDER HIGH-SPEED MAGIC-ANGLE-SPINNING".JOURNAL OF MAGNETIC RESONANCE SERIES A 109.1(1994):6-13.