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OVERHAUSER magnetometer

A magnetometer and external magnetic field technology, applied in the field of magnetometers, can solve the problems of limited use range, insufficient sensitivity, complex device, etc., and achieve the effects of improving measurement accuracy and sensitivity, high sensitivity and simple structure

Inactive Publication Date: 2010-09-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the commonly used weak magnetic field measuring instruments include ordinary proton precession magnetometer, optical pump magnetometer and low-temperature superconducting quantum interference magnetometer. Too complex, which limits its scope of use

Method used

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment:

[0036] The OVERHAUSER magnetometer provided by the present invention, the specific technical scheme that adopts is as follows, see figure 1 :

[0037] The OVERHAUSER magnetometer of the present invention is composed of a high-frequency oscillator 1, a probe 2, a DC pulse generator 3, an amplifier 4, a frequency counter 5 and a numerical control unit 6, and each part is controlled by the numerical control unit 6 to work in harmony to form a high-precision OVERHAUSER proton Magnetometer; the numerical control unit 6 first controls the high-frequency oscillator 1 to generate a high-frequency signal, and the signal acts on the probe 2 to cause the material in the probe 2 to produce an OVERHAUSER effect to reach a polarized state, and then controls the DC pulse generator 3 to the probe 2 A DC pulse is generated. At this time, the probe 2 will output a ...

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Abstract

The invention relates to the technical field of magnetic field measurement, in particular to a magnetometer capable of absolutely measuring a weak magnetic field. The magnetometer comprises a high-frequency oscillator (1), a probe (2), a DC pulse generator (3), an amplifier (4), a frequency meter (5) and a numerical control unit (6); the numerical control unit (6) controls all parts to work in a coordinative way to form the high-precision OVERHAUSER proton magnetometer; and an external magnetic filed is measured through the mutual action of double resonance systems, i.e. resonance of unpaired electrons of free radical in free radical solution in the probe in a high-frequency magnetic field and resonance of protons in the free radical solution in the external magnetic field. The OVERHAUSER magnetometer has the advantages of high precision, high sensitivity, low power consumption, absolute measurement to the external magnetic field and the like.

Description

technical field [0001] The invention relates to the technical field of magnetic field measurement, in particular to a magnetometer capable of absolutely measuring weak magnetic fields. Background technique [0002] Weak magnetic field measurement technology is an important means to study physical phenomena related to magnetic phenomena, and has gradually become an important subject. Space magnetic field information is of great significance to human activities, including space detection, near-surface detection, ocean detection, geomagnetic field detection, military technology, etc. Therefore, in the fields of national defense construction, scientific research, daily life, industrial production, etc., magnetic field measurement often plays an important role. The decisive role, the level of accuracy, the difficulty of measurement methods, and economical factors are directly related to the practicability and scalability of measuring instruments. [0003] Space magnetic field me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/24
Inventor 董浩斌谭超董茜张艳丽
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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