Temperature imaging by 1H NMR and suppression of convection in NMR probes
A simple arrangement for suppressing convection in NMR probes is tested experimentally. Diffusion experiments are used to determine the onset of convection and 1H temperature imaging helps to rationalize the somewhat surprising results. A convenient new 1H NMR thermometer, CH2Br2 dissolved in a nematic thermotropic liquid crystal, is presented. Copyright 1998 Academic Press.
Hedin
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Department of Chemistry, Royal Institute of Technology, Stockholm, SE-10044, Sweden.
Furo
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