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Effective method for inhibiting influence of alkali metal atom polarization magnetic field in nuclear magnetic resonance gyroscope

A technology of nuclear magnetic resonance gyroscope and atomic polarization, which is applied in the direction of steering induction equipment, etc., can solve the problems of difficult precise adjustment and realization, and achieve the effect of reducing requirements and improving environmental stability

Active Publication Date: 2021-05-25
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

In addition, there is a scheme to suppress this mechanism by adjusting the double-isotope closed-loop phase, but there are also disadvantages that it is difficult to achieve precise adjustment

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  • Effective method for inhibiting influence of alkali metal atom polarization magnetic field in nuclear magnetic resonance gyroscope
  • Effective method for inhibiting influence of alkali metal atom polarization magnetic field in nuclear magnetic resonance gyroscope
  • Effective method for inhibiting influence of alkali metal atom polarization magnetic field in nuclear magnetic resonance gyroscope

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Embodiment Construction

[0031] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0032] refer to Figure 1-3 , the specific implementation mode adopts the following technical solutions: an effective method for suppressing the influence of the polarized magnetic field of alkali metal atoms in the nuclear magnetic resonance gyroscope, comprising the following steps:

[0033] 1. Use the NMRG embedded alkali metal magnetometer to measure the longitudinal magnetic field strength felt by the alkali metal atoms, including the external magnetic field and the magnetic moment magnetic field of the rare gas atomic nucleus;

[0034] 2. Combine the measured longitudinal magnetic fields felt by alkali metal atoms and two rare gas atoms, establish the magnetic field strength model of alkali metal atoms and rare gas atoms, and obtain the effe...

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Abstract

The invention discloses an effective method for inhibiting the influence of an alkali metal atom polarization magnetic field in a nuclear magnetic resonance gyroscope, and relates to the field of quantum sensors. The method comprises the following steps of: 1, using an NMRG embedded alkali metal magnetometer for measuring longitudinal magnetic field intensity sensed by alkali metal atoms, wherein the longitudinal magnetic field intensity comprises an external magnetic field and a rare gas atomic nucleus magnetic moment magnetic field; 2, combining the measured longitudinal magnetic fields sensed by the alkali metal atoms and the two rare gas atoms, establishing an alkali metal atom and rare gas atom magnetic field intensity model, and obtaining a theoretical formula of the influence of the longitudinal magnetic fields sensed by the alkali metal atoms on the NMRG double-isotope differential frequency; and 3, by utilizing a theoretical formula, reducing the influence of an alkali metal atom polarization magnetic field from an original differential frequency signal of the NMRG, so that the aim of improving the performance of the gyroscope is fulfilled. The performance of the gyroscope can be improved, and development of the nuclear magnetic resonance gyroscope and development of a new generation of quantum devices are facilitated.

Description

technical field [0001] The invention relates to the field of quantum sensor devices, in particular to an effective method for suppressing the influence of alkali metal atomic polarized magnetic fields in nuclear magnetic resonance gyroscopes, which is of great significance to the development of a new generation of nuclear magnetic resonance atomic gyroscopes. Background technique [0002] Nuclear magnetic resonance gyroscope (Nuclear Magnetic Resonance Gyroscope, NMRG) has many advantages such as high precision, small size, low power consumption, low cost, etc. An important research direction in the inertial field. [0003] Studies have found that the precision performance of NMRG is affected by various physical factors such as magnetic field, optical field, and thermal field. Among them, changing the polarized magnetic field of alkali metal atoms to affect the gyroscope NMR frequency signal is one of the most important physical mechanisms currently restricting the performa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/60
CPCG01C19/60
Inventor 张燚汪之国李佳佳江奇渊罗晖杨开勇
Owner NAT UNIV OF DEFENSE TECH
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