研究目的
To develop a low-cost, space-saving table-top NMR system for high-pressure studies with in situ laser heating, enabling the investigation of matter under extreme conditions.
研究成果
The developed table-top NMR system based on Halbach magnet arrays is a cost-effective and space-saving solution for high-pressure NMR studies, compatible with laser heating setups. It opens new possibilities for investigating matter under extreme conditions in the fields of solid state physics, chemistry, and geosciences.
研究不足
The spectral resolutions are too low for structural determinations. The method is currently limited to samples smaller than 40 pl and requires careful positioning within the magnetic sweet spot for optimal results.
1：Experimental Design and Method Selection:
Development of a table-top NMR system using Halbach magnet arrays for high-pressure studies with in situ laser heating.
2：Sample Selection and Data Sources:
Distilled water and fine gold powder were used as samples in diamond anvil cells (DACs).
3：List of Experimental Equipment and Materials:
Halbach array magnet, BX90 pressure cell, Lenz lens resonators, excitation coils, pulsed laser heating setup.
4：Experimental Procedures and Operational Workflow:
Preparation of DACs with Lenz lens resonators, loading samples, pressurizing, NMR measurements with spin echo excitation, laser heating for high-temperature experiments.
5：Data Analysis Methods:
Fourier transform of free induction decays, signal to noise ratio analysis for temperature estimation.
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