Relaxation Processes in NQR Multiple-Pulse Spin-Locking

N. E. Ainbinder; G. B. Furman; G. E. Kibrik; A. Yu Poljakov; I. G. Shaposhnikov

doi:10.1515/zna-1986-1-269

Relaxation Processes in NQR Multiple-Pulse Spin-Locking

N. E. Ainbinder, G. B. Furman, G. E. Kibrik, A. Yu Poljakov, I. G. Shaposhnikov

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9 Scopus citations

Abstract

A theory of the spin-lattice and spin-spin relaxation processes in quadrupole spin systems with I > 1/2 in the situation of the multiple-pulse NQR spin locking is proposed for the pulse sequence MW-4. The theory is based on the assumption that for t >~T2the change of the spin system is a quasi-equilibrium process. Rate equations for inverse generalized temperatures are obtained and the kinetic coefficients calculated for the case of exponential correlation functions. The above assumption was confirmed for some substances containing the 35C1 and 123Sb, and the time constant T1e characterizing the spin echo signal decay was investigated and compared with the time constant T1Q in the case of continuous spin locking.

Original language	English
Pages (from-to)	366-369
Number of pages	4
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	41
Issue number	1-2
DOIs	https://doi.org/10.1515/zna-1986-1-269
State	Published - 1 Jan 1986
Externally published	Yes

ASJC Scopus subject areas

Mathematical Physics
General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "A theory of the spin-lattice and spin-spin relaxation processes in quadrupole spin systems with I > 1/2 in the situation of the multiple-pulse NQR spin locking is proposed for the pulse sequence MW-4. The theory is based on the assumption that for t >~T2the change of the spin system is a quasi-equilibrium process. Rate equations for inverse generalized temperatures are obtained and the kinetic coefficients calculated for the case of exponential correlation functions. The above assumption was confirmed for some substances containing the 35C1 and 123Sb, and the time constant T1e characterizing the spin echo signal decay was investigated and compared with the time constant T1Q in the case of continuous spin locking.",

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AU - Ainbinder, N. E.

AU - Furman, G. B.

AU - Kibrik, G. E.

AU - Poljakov, A. Yu

AU - Shaposhnikov, I. G.

PY - 1986/1/1

Y1 - 1986/1/1

N2 - A theory of the spin-lattice and spin-spin relaxation processes in quadrupole spin systems with I > 1/2 in the situation of the multiple-pulse NQR spin locking is proposed for the pulse sequence MW-4. The theory is based on the assumption that for t >~T2the change of the spin system is a quasi-equilibrium process. Rate equations for inverse generalized temperatures are obtained and the kinetic coefficients calculated for the case of exponential correlation functions. The above assumption was confirmed for some substances containing the 35C1 and 123Sb, and the time constant T1e characterizing the spin echo signal decay was investigated and compared with the time constant T1Q in the case of continuous spin locking.

AB - A theory of the spin-lattice and spin-spin relaxation processes in quadrupole spin systems with I > 1/2 in the situation of the multiple-pulse NQR spin locking is proposed for the pulse sequence MW-4. The theory is based on the assumption that for t >~T2the change of the spin system is a quasi-equilibrium process. Rate equations for inverse generalized temperatures are obtained and the kinetic coefficients calculated for the case of exponential correlation functions. The above assumption was confirmed for some substances containing the 35C1 and 123Sb, and the time constant T1e characterizing the spin echo signal decay was investigated and compared with the time constant T1Q in the case of continuous spin locking.

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ER -

Relaxation Processes in NQR Multiple-Pulse Spin-Locking

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