Non-invasive remote substance detection device based on ground and field nuclear magnetic resonance

Abstract

The invention discloses a non-invasive remote substance detection device based on ground and ball field nuclear magnetic resonance, which is based on a nuclear magnetic resonance technology principle, that is, by utilizing Zeeman energy level splitting and Larmor precession of a substance magnetic atomic nucleus induced by an earth magnetic field, a detection area is irradiated by extremely-low-frequency electromagnetic excitation pulses; a specific magnetic atomic nucleus absorbs photon energy carried by a specific radio frequency and jumps from a low energy level to a high energy level to generate a nuclear magnetic resonance signal; and a nuclear magnetic resonance signal is detected and sensed by virtue of a signal receiving device, so that qualitative and spatial positioning of a detected target substance is realized. The device has a clear scientific basis and a clear technical implementation approach, is not restricted by the type and physical form of a detected substance in the detection process, and does not change the physical and chemical properties of the detected substance, so that the device is a non-invasive remote substance detection device; and the device not only can be applied to underground mineral resource exploration, but also can be applied to related fields such as environmental protection and archaeological.

Description

technical field [0001] The invention belongs to the technical field of ultra-long-wave near-field material detection, and in particular relates to a non-invasive remote material detection device based on earth field nuclear magnetic resonance. Background technique [0002] Long-distance material detection, especially for the qualitative and positioning detection of underground minerals, has always been an unresolved key technical problem in the field of geological and mineral exploration at home and abroad. Practice has shown that traditional geophysical measurements such as gravity, magnetism, electricity, and seismicity have obvious advantages in exploring large-scale or regional geoscience issues, but they often encounter difficulties in the qualitative and positioning detection of small and medium-scale targets such as deposits or ore bodies. Overcome ambiguity and resolution issues. Geophysical surveys usually delineate some geophysical anomalies in the survey area. Ho...

AI Technical Summary

Problems solved by technology

Judging from a large number of mineral exploration cases at home and abroad, conventional geophysical prospecting technology is difficult to achieve this, so it is difficult to meet the actual needs of geological prospecting work

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