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Table-top nuclear magnetic resonance system for high-pressure studies with in situ laser heating.
Review of Scientific Instruments ( IF 1.480 ) Pub Date : 2019-12-01 , DOI: 10.1063/1.5128592
Thomas Meier,Anand Prashant Dwivedi,Saiana Khandarkhaeva,Timofey Fedotenko,Natalia Dubrovinskaia,Leonid Dubrovinsky

High pressure Nuclear Magnetic Resonance (NMR) is known to reveal the behavior of matter under extreme conditions. However, until now, significant maintenance demands, space requirements, and high costs of superconducting magnets render its application unfeasible for regular modern high pressure laboratories. Here, we present a table-top NMR system based on permanent Halbach magnet arrays with a diameter of 25 cm and height of 4 cm. At the highest field of 1013 mT, 1H-NMR spectra of ice VII have been recorded at 25 GPa and ambient temperature. The table-top NMR system can be used together with double sided laser heating setups. Feasibility of high-pressure high-temperature NMR was demonstrated by collecting 1H-NMR spectra of H2O at 25 GPa and 1063(50) K. The change in the signal intensity in a laser-heated NMR diamond anvil cell has been found to yield a convenient way for temperature measurements.
更新日期:2019-12-31

 

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