Multiple quantum NMR dynamics of spin-1/2 carrying molecules of a gas in nanopores

被引：30

作者：

Doronin, S. I. ^{[1
]}

Fedorova, A. V. ^{[1
]}

Fel'dman, E. B. ^{[1
]}

Zenchuk, A. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 131卷 / 10期

关键词：

NUCLEAR-MAGNETIC-RESONANCE;

D O I：

10.1063/1.3231692

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We consider the multiple quantum (MQ) NMR dynamics of a gas of spin carrying molecules in nanocavities. MQ NMR dynamics is determined by the residual dipole-dipole interactions, which are not averaged completely due to the molecular diffusion in nanopores. Since the averaged nonsecular Hamiltonian describing MQ NMR dynamics depends on only one coupling constant, this Hamiltonian commutes with the square of the total spin angular momentum (I) over cap (2). We use the basis of common eigenstates of (I) over cap (2) and the projection of I on the external magnetic field for investigation of MQ NMR dynamics. This approach allows us to study MQ NMR dynamics in systems consisting of several hundreds of spins. The analytical approximation of the stationary profile of MQ coherences is obtained. The analytical expressions for MQ NMR coherence intensities of the five-spin system in a nanopore are found. Numerical investigations allow us to find the dependencies of intensities of MQ coherences on their orders (the profiles of MQ coherences) in systems consisting of 600 spins and even more. It is shown that the stationary MQ coherence profile in the considered system is an exponential one. (C) 2009 American Institute of Physics. [doi:10.1063/1.3231692]

引用

页数：7

共 23 条

[1] Confinement effect on dipole-dipole interactions in nanofluids [J].

Baugh, J ;

Kleinhammes, A ;

Han, DX ;

Wang, Q ;

Wu, Y .

SCIENCE, 2001, 294 (5546) :1505-1507

[2] MULTIPLE-QUANTUM DYNAMICS IN SOLID-STATE NMR [J].

BAUM, J ;

MUNOWITZ, M ;

GARROWAY, AN ;

PINES, A .

JOURNAL OF CHEMICAL PHYSICS, 1985, 83 (05) :2015-2025

[3] MULTIPLE-QUANTUM NMR-STUDY OF CLUSTERING IN HYDROGENATED AMORPHOUS-SILICON [J].

BAUM, J ;

GLEASON, KK ;

PINES, A ;

GARROWAY, AN ;

REIMER, JA .

PHYSICAL REVIEW LETTERS, 1986, 56 (13) :1377-1380

[4] NMR-STUDIES OF CLUSTERING IN SOLIDS [J].

BAUM, J ;

PINES, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (24) :7447-7454

[5] Dynamics and control of a quasi-one-dimensional spin system [J].

Cappellaro, P. ;

Ramanathan, C. ;

Cory, D. G. .

PHYSICAL REVIEW A, 2007, 76 (03)

[6] Decay of highly correlated spin states in a dipolar-coupled solid:: NMR study of CaF2 [J].

Cho, HyungJoon ;

Cappellaro, Paola ;

Cory, David G. ;

Ramanathan, Chandrasekhar .

PHYSICAL REVIEW B, 2006, 74 (22)

[7] Multiple quantum NMR dynamics in dipolar ordered spin systems [J].

Doronin, S. I. ;

Fel'dman, E. B. ;

Kuznetsova, E. I. ;

Furman, G. B. ;

Goren, S. D. .

PHYSICAL REVIEW B, 2007, 76 (14)

[8] Supercomputer analysis of one-dimensional multiple-quantum dynamics of nuclear spins in solids [J].

Doronin, SI ;

Fel'dman, EB ;

Guinzbourg, IY ;

Maximov, II .

CHEMICAL PHYSICS LETTERS, 2001, 341 (1-2) :144-152

[9] Multiple-quantum dynamics of one-dimensional nuclear spin systems in solids [J].

Doronin, SI ;

Maksimov, II ;

Fel'dman, EB .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2000, 91 (03) :597-609

[10] NMR line shapes of a gas of nuclear spin-1/2 molecules in fluctuating nano-containers [J].

Fel'dman, EB ;

Rudavets, MG .

CHEMICAL PHYSICS LETTERS, 2004, 396 (4-6) :458-464

← 1 2 3 →