Method for increasing spin relaxation time of polarized gas in atom pool

A technology of spin relaxation time and polarized gas, which is applied in the field of atomic optics, can solve the problems of violent collision between noble gas atoms and buffer gas atoms, and the broadening of nuclear resonance spectral lines, so as to extend the spin relaxation time, The effect of prolonging the relaxation time of atomic spins

Active Publication Date: 2015-06-10
NAT UNIV OF DEFENSE TECH
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing buffer gas filling scheme, if the buffer gas is filled too much, the collision between the inert gas atoms and the buf

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for increasing spin relaxation time of polarized gas in atom pool
  • Method for increasing spin relaxation time of polarized gas in atom pool
  • Method for increasing spin relaxation time of polarized gas in atom pool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention proposes a method for prolonging the spin relaxation time of the polarized gas in the atomic pool based on the photodesorption principle, which can reduce the adsorption energy of the inert gas atoms and the inner wall film through the photodesorption principle, so that the gas atoms and The adsorption time of the inner wall film becomes shorter, thereby prolonging the atomic spin relaxation time. More importantly, this method can increase the spin relaxation time of polarized gas atoms with nuclear electric quadrupole moments. Therefore, this method is of great significance for improving the performance of atomic magnetometers and atomic spin gyroscopes.

[0021] The present invention will be further described below in conjunction with the accompanying drawings. But it should not limit the protection scope of the present invention.

[0022] In order to clearly explain the working principle of the scheme, the physical mechanism is mainly analyzed...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for increasing spin relaxation time of polarized gas in an atom pool. A light-induced desorption principle is adopted to accelerate escaping of polarized atoms from an anti-degradation polarized film to reduce time that the polarized atoms are adsorbed, nonuniformity in type and number of the atoms adsorbed on the surface of the anti-degradation polarized film is lowered, and gradient of an electric field on the anti-degradation polarized film is reduced. Through the above two physical mechanisms, probability of spin relaxation of polarized nuclei is lowered, and spin relaxation time of the polarized atoms is increased. By the method, spin relaxation time of atoms in the atom pool can be increased, and spin relaxation time of the polarized atoms with nuclear quadrupole moment can be increased especially; the method is of great significance in improving performance of an atomic magnetometer and an atomic spin gyroscope.

Description

technical field [0001] The invention relates to a method for prolonging the spin relaxation time of a polarized gas in an atomic pool, in particular to a method for prolonging the spin relaxation time of a polarized gas atom with a nuclear quadrupole moment, belonging to the field of atomic optics. Background technique [0002] Nuclear magnetic resonance technology is not only widely used in scientific research in physics, chemistry, and materials science, but also in the field of engineering technology. Atomic magnetometers and atomic spin gyroscopes are typical applications. In these two types of atomic devices, atomic pools are their core components. Generally, the atomic pool contains alkali metal gas, inert gas and buffer gas, and the inert gas atoms are indirectly polarized by optically pumping the alkali metal. Under this condition, the Larmor precession frequency of the inert gas extracted by the probe light produces a frequency shift, and then the angular velocity ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R33/44G01N24/08
Inventor 肖光宗冯伟刘小虎汪之国袁杰罗晖
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap