# Pressure and temperature dependence of the chlorine NQR in caesium and sodium chlorates

Ramesh, KP and Suresh, KS and Rao, Raghavendra C and Ramakrishna, J (2008) Pressure and temperature dependence of the chlorine NQR in caesium and sodium chlorates. In: Magnetic Resonance in Chemistry, 46 (6). pp. 525-533.

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## Abstract

The $^{35}Cl$ nuclear quadrupole resonance (NQR) frequencies ($\nu_Q$) in caesium and sodium chlorates were measured as a function of temperature, from 77 to 300 K at different pressures up to 5.1 kbar, and the data were analysed to estimate the volume dependence of the electric field gradient (EFG), torsional frequency and also the contributions to the NQR frequency from static and dynamic effects. The variation of spin-lattice relaxation time with pressure at different temperatures was studied in the case of sodium chlorate and at room temperature in case of caesium chlorate. The pressure dependence of the spin-lattice relaxation time $(T_1)$ suggests that the relaxation is mainly due to the torsional motions.

Item Type: Journal Article Copyright of this article belongs to John Wiley & Sons. NQR;35Cl;caesium chlorate;sodium chlorate;spin-lattice relaxation time;torsional motions;EFG. Division of Physical & Mathematical Sciences > Physics 07 Jul 2008 19 Sep 2010 04:46 http://eprints.iisc.ernet.in/id/eprint/14817