Show simple item record Jones, Aled R. Shaw-West, Rachel N. Winter, Rudolf Massiot, Dominique Florian, Pierre Wolff, Matthias 2007-01-30T15:55:54Z 2007-01-30T15:55:54Z 2007-01-30
dc.identifier.citation Jones , A R , Shaw-West , R N , Winter , R , Massiot , D , Florian , P & Wolff , M 2007 , ' Laser-heated high-temperature NMR - a time-resolution study ' Applied Magnetic Resonance , vol 32 , no. 4 , pp. 635-646 . , 10.1007/s00723-007-0035-y en
dc.identifier.issn 0937-9347
dc.identifier.other PURE: 71794
dc.identifier.other dspace: 2160/299
dc.description Submitted to Appl Magn Reson Sponsorship: EPSRC / EU en
dc.description.abstract The time resolution achievable in in-situ high-temperature nuclear magnetic resonance (NMR) experiments is investigated using laser heating of refractory materials. Three case studies using 27Al in alumina nano-particles, 29Si in silicon carbide and 23Na in a glass-forming mixture of sodium carbonate and quartz have been conducted to distinguish the cases of (a) a fast-relaxing, high natural abundance nucleus, (b) a probe nucleus with low abundance and low spin-lattice relaxation rate, and (c) a complex and changing system of industrial relevance. The most suitable nucleus for in-situ high-temperature studies is one with high abundance but slow relaxation because the differential relaxation time between hot and cold parts of the sample effectively removes the signal from the cold material. There is no ``in-situ penalty'' from the diminishing Boltzmann polarisation at high temperature since this effect is balanced by a corresponding increase of the spin-lattice relaxation rate. en
dc.language.iso eng
dc.relation.ispartof Applied Magnetic Resonance en
dc.title Laser-heated high-temperature NMR - a time-resolution study en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Mathematics and Physics en
dc.description.status Peer reviewed en

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