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Magnetic field measurement method and device

A magnetic field measurement and magnetic field technology, applied in the field of magnetic field measurement methods and devices

Active Publication Date: 2021-04-20
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing measurement method is based on a more complex magnetic field dependence, and the measurement accuracy is related to the magnitude of the measured magnetic field induction intensity. Strict zero calibration is required before use.

Method used

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  • Magnetic field measurement method and device
  • Magnetic field measurement method and device
  • Magnetic field measurement method and device

Examples

Experimental program
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Effect test

Embodiment

[0064] A magnetic field measuring device:

[0065] Such as figure 1 and figure 2 As shown, the device includes an atomic beam generator 1 and a vacuum working chamber 2 connected thereto.

[0066] The atomic beam generator 1 can generate the atomic beam 9 of gaseous matter or solid matter; it can be the atomic beam used by the atomic furnace to generate the atomic beam of the solid matter, or the atomic beam used by the ultrasonic beam generator to generate the gaseous matter.

[0067] Vacuum chamber 2 The space for atomic excitation, field ionization, and signal detection needs to be kept in a high vacuum state. The laser excites atoms to a specific energy level in this chamber, and the atoms in the excited state continue to fly into the field ionization grid. Ionization occurs under the action, and the ionized electrons are captured by the signal detection device, and the recorded signal is recorded by the data acquisition device and stored in the computer. Continuously ...

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Abstract

The invention relates to the technical field of magnetic field measurement technology, in particular to a magnetic field measurement method and device. The method includes the following steps: generating excited state atoms by using a laser beam to act on the atomic beam in a magnetic field; ionizing the excited state atoms after passing through the electric field to generate ionized electrons; detecting the ionized electrons and collecting signals; controlling the scanning wavelength of the laser, adjusting and changing the laser Polarization, to obtain atomic left-handed spectrum and right-handed spectrum; compare left-handed spectrum and right-handed spectrum to obtain the energy translation of the two, and the energy shift in the atomic unit is numerically equal to the magnitude of the magnetic induction intensity. The method has good locality and can realize efficient and reliable measurement of magnetic induction.

Description

technical field [0001] The invention relates to the technical field of magnetic field measurement technology, in particular to a magnetic field measurement method and device. Background technique [0002] Magnetic field measurement technology is increasingly used to solve important national economic and scientific research problems, and has a wide range of applications in military, resource exploration, scientific research and other fields. The size of the magnetic field can be characterized by magnetic induction, which is the amount that indicates the size of the magnet's influence on the air around it. [0003] Magnetic field measurements are mainly carried out with magnetic measuring instruments. For the measurement of DC magnetic fields that do not vary with time, commonly used measuring instruments include torque magnetometers, fluxmeters and impact galvanometers, rotating coil magnetometers, fluxgate magnetometers, Hall effect magnetometers, NMR magnetometer, magneto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/032
CPCG01R33/032
Inventor 杨海峰赵志国
Owner LUOYANG NORMAL UNIV
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