Time-dependent dynamics quantitative regulation and control method for ion intrinsic micro-motion

Abstract

The invention relates to a time-dependent dynamics quantitative regulation and control method for ion intrinsic micro-motion. The method comprises the following steps: firstly, evaluating original parameters of a trapping few-ion ensemble, determining trapping electromagnetic field parameters, and establishing a trapping few-ion ensemble model; then, based on the model, carrying out evaluation and micro-motion compensation on the imprisoned few ion ensemble temperature-fluorescence broadening effect; on the basis, performing resonance model adaptability analysis and external field correction for trapping a 3D large ion ensemble on a few ion ensemble model, extracting a 3D ion ensemble motion spectrum, and evaluating and optimizing the space charge effect and the characteristic temperature; afterwards, quantitatively analyzing the intrinsic micro-motion and long-term motion 3D correlation coupling characteristics of the 3D ion ensemble, and decoupling the intrinsic micro-motion transient process of the ions; and finally, regulating and controlling the intrinsic micro-motion of the 3D ion ensemble, and realizing the intrinsic micro-motion optimization of the ion ensemble under the specific spatial configuration so that the quasi-adiabatic dynamic condition of the intrinsic micro-motion on the 3D ion ensemble is finally met.

Description

technical field [0001] The invention relates to a time-dependent dynamics quantitative control method for ion intrinsic micro-motion, which belongs to the technical field of trapped ion frequency standard and mass spectrometry. Background technique [0002] The radial motion of a single ion or chain ion system trapped in a quadrupole linear ion trap can be described by the Mathieu equation: [0003] [0004] Wherein, r is the coordinate vector of the ion ensemble on the radial center plane, r=(x, y), and x, y are the coordinates of the ion ensemble in the x direction and y direction in the radial center plane Cartesian coordinate system respectively. a x ,q i , ξ are dimensionless parameters, a x Represents the stable trapping parameter in the x-direction of the axial plane of the ion, a y Represents the ion's axis-plane y-direction stable trapping parameter, q x represents the radial plane x-direction stable trapping parameter of the ion, q y Represents the stable ...

AI Technical Summary

Problems solved by technology

[0017] The technical problem solved by the present invention is: to overcome the deficiency that the prior art cannot quantitatively evaluate and regulate the intrinsic micro-motion of ions, and provide a time-dependent dynamics quantitative control method for the intrinsic micro-motion of the ion system, based on the kinetic information of the trapped ion ensemble Fine inversion of the 3D correlation and coupling characteristics of intrinsic micro-motion and long-term motion, decoupling the transient evolution characteristics of intrinsic micro-motion, and regulating it, solve the problem of numerical analysis and experimental measurement of intrinsic micro-motion and additional micro-motion in the past. Problems that are not decoupled and quantified in

Images