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

✍ Scribed by K. P. Ramesh; K. S. Suresh; C. Raghavendra Rao; J. Ramakrishna

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
300 KB
Volume
46
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^35^Cl nuclear quadrupole resonance (NQR) frequencies (Ξ½~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. Copyright Β© 2008 John Wiley & Sons, Ltd.

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Temperature dependence study of chlorine
Temperature dependence study of chlorine NQR frequency and spin–lattice relaxation time in 2-amino,-3,5-dichloropyridine
✍ Mohammed Hossein Ala Amjadi; K. P. Ramesh; N. Rajendra Kumar; J. Ramakrishna πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 114 KB πŸ‘ 2 views

Chlorine-35 NQR frequency and spin-lattice relaxation time measurements as a function of temperature in the range 77-300 K were carried out on 2-amino-3,5-dichloropyridine. Two NQR signals were observed and were assigned to the two chlorines present in the molecule using the additive model for subst