SPIN CONVERSION IN MIXED AMMONIUM-POTASSIUM HALIDE-SYSTEMS

Authors
MUKHOPADHYAY R TOMKINSON J CARLILE CJ
Citation
R. Mukhopadhyay et al., SPIN CONVERSION IN MIXED AMMONIUM-POTASSIUM HALIDE-SYSTEMS, Journal of the Chemical Society. Faraday transactions, 92(22), 1996, pp. 4367-4369
Citations number
16
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Journal of the Chemical Society. Faraday transactions → ACNP
ISSN journal
09565000
Volume
92
Issue
22
Year of publication
1996
Pages
4367 - 4369
Database
ISI
SICI code
0956-5000(1996)92:22<4367:SCIMAH>2.0.ZU;2-R
Abstract
The spin-temperature relaxation in (NH4)(c)K(1-c)X (X = I, Br) is stud ied by inelastic neutron scattering spectroscopy. It is demonstrated f or the first time that these salts, prepared from aqueous solutions, c an maintain a spin-temperature inversion. Both the mixed halides relax at similar rates and these rates increase with temperature, following an approximately T-3 variation. Relaxation has been found to continue even at the lowest temperature.