2018/03/14 by Thomas Meier, Saiana Khandarkhaeva, Meier, Thomas +13
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Geophysics and Sensor Technology #High-pressure geophysics and materials #earthquake and tectonic studies #physics.app-ph
paper · pdf · doi:10.48550/arxiv.1803.05472
arxiv created 2018/03/14 · openalex publication_date 2018/03/14 · arxiv updated 2018/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The past 15 years have seen an astonishing increase in Nuclear Magnetic Resonance (NMR) sensitivity and accessible pressure range in high-pressure NMR experiments, owing to a series of new developments of NMR spectroscopy applied to the diamond anvil cell (DAC). Recently, with the application of electro-magnetic lenses, so-called Lenz lenses, in toroidal diamond indenter cells, pressures of up to 72 GPa with NMR spin sensitivities of about 1012 spins/(Hz1/2) has been achieved. Here, we describe the implementation of a refined NMR resonator structure using a pair of double stage Lenz lenses driven by a Helmholtz coil within a standard DAC, allowing to measure sample volumes as small as 100 pl prior to compression. With this set-up, pressures close to the mega-bar regime (1 Mbar = 100 GPa) could be realised repeatedly, with enhanced spin sensitivities of about 5x1011 spin/(Hz1/2). The manufacturing and handling of these new NMR-DACs is relatively easy and straightforward, which will allow for further applications in physics, chemistry, or biochemistry.