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.

中文翻译：

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用于使用原位激光加热进行高压研究的台式核磁共振系统

众所周知，高压核磁共振 (NMR) 可以揭示物质在极端条件下的行为。然而，直到现在，超导磁体的大量维护需求、空间要求和高成本使其在常规现代高压实验室中的应用变得不可行。在这里，我们提出了一种基于永久 Halbach 磁体阵列的桌面核磁共振系统，其直径为 25 厘米，高度为 4 厘米。在 1013 mT 的最高场，在 25 GPa 和环境温度下记录了冰 VII 的 1H-NMR 光谱。台式 NMR 系统可与双面激光加热装置一起使用。通过在 25 GPa 和 1063(50) K 下收集 H2O 的 1H-NMR 光谱证明了高压高温 NMR 的可行性。