High-temperature nuclear magnetic resonance probe and system

Abstract

The invention belongs to the field of the nuclear magnetic resonance, and discloses a high-temperature nuclear magnetic resonance probe and system. The probe comprises a metal shielding layer, a thermal insulation layer, a resonance coil, a heating unit and a protection unit; the metal shielding layer is a cavity structure with a closed upper end and an opened lower end; the thermal insulation layer is coated at the external of the metal shielding layer, and the bottom of the thermal insulation layer and the internal of the metal shielding layer form a heating chamber; a cooling layer is coated at the external of the thermal insulation layer, a resonance coil upper end is arranged in the heating chamber, and the lower end is connected with the resonance circuit after penetrating the thermal insulation layer and the cooling layer; heating parts of the heating unit are arranged surrounding the metal shielding layer, and a temperature measurement part is inserted into the thermal insulation layer from the external; and a protection unit provides protection gas for the heating chamber. The system comprises the probe and a temperature control, cooling and protection gas subsystems; theprobe is arranged in a magnet; the temperature control subsystem, the cooling subsystem and the protection gas subsystem are connected with the heating unit, the cooling layer and the protection unit.The high-temperature nuclear magnetic resonance disclosed by the invention is simple in structure, accurate in detection and convenient to change sample.

Description

technical field [0001] The invention belongs to the field of nuclear magnetic resonance, and more specifically relates to a high-temperature nuclear magnetic resonance probe and a system. Background technique [0002] High-temperature nuclear magnetic resonance technology is a technology that uses nuclear magnetic resonance to detect the properties of matter at high temperatures. This technology has important applications in the study of the structural evolution of substances at high temperatures and chemical reactions at high temperatures. The realization of nuclear magnetic resonance at high temperature is mainly achieved by changing the design of the probe. The magnets used can be commercial superconducting magnets or electromagnets, and signal analysis and processing can also be performed with commercial nuclear magnetic resonance spectrometers. Because in superconducting magnets or electromagnets, the chamber that can be used to place NMR probes is generally relatively ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a high-temperature nuclear magnetic resonance probe and system, which can effectively solve the problems existing in the existing probe through the rational layout of key components such as heat insulation layer, cooling layer and heating unit. The test results are not accurate and cannot be applied to general-purpose superconducting magnets. It has the advantages of simple structure, accurate detection, and convenient sample replacement. It is suitable for any existing general-purpose superconducting magnets.

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