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Electronic motion trail prediction method and storage medium

A trajectory prediction and electronic movement technology, which is applied in the direction of prediction, complex mathematical operations, special data processing applications, etc., can solve the problems of high requirements for experimental conditions, difficulty in determining electronic electronic trajectory, equipment and experimental damage, etc., to improve prediction The effect of precision

Inactive Publication Date: 2020-12-22
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the technical problem that the laser electron acceleration scheme in vacuum has high requirements on experimental conditions, and high-energy electrons are likely to cause irreparable damage to equipment and experiments, so that it is difficult to determine the trajectory of electrons and electrons, and provides a method for predicting the trajectory of electrons and installation

Method used

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  • Electronic motion trail prediction method and storage medium
  • Electronic motion trail prediction method and storage medium
  • Electronic motion trail prediction method and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1, electronic motion trajectory prediction method, the flow chart is as follows Figure 8 As shown, the following steps are specifically included:

[0047](1) Determine the vector potential model of the femtosecond tightly focused Gaussian laser pulse according to the amplitude parameters, phase parameters, focus diameter, pulse width and laser pulse width of the pre-determined relativistic electrons; wherein the vector potential model of FTFGLP is expressed as:

[0048]

[0049] Here, a 0 is the amplitude parameter, which characterizes the characteristic of relativistic electrons, that is, the intensity of the laser pulse, and the expression is: Relativistic factor γ=(1-u 2 ) -1 / 2 , u is the electron velocity normalized by the light velocity c in vacuum, where a 0 use e / mc 2 Normalized, |A| is the amplitude of the vector potential, λ(μm) and I(W / cm 2 ) are the wavelength and intensity of the laser respectively, and the values ​​of m and e are respe...

Embodiment 4

[0067] Embodiment 4. On the basis of Embodiment 3, high-energy electrons emit radiation in one direction, which can be expressed as: Such as figure 1 shown. In this example, the unit solid angle Normalized radiant power:

[0068]

[0069] In the formula, is the position vector of the electron, and t′ is the time or delay time of the electron. Embodiment five, on the basis of embodiment four, in order to determine the relationship between the movement time and delay time of electrons, obtain a more accurate trajectory prediction result, the relationship between t' and t in this embodiment is defined as follows:

[0070]

[0071] In the formula, R 0 is the distance from the origin to the observer.

Embodiment 6

[0072] Embodiment 6. This embodiment provides a method for predicting the trajectory of electrons, including the following steps: The characteristics of relativistic electrons are Relativistic factor γ=(1-u 2 ) -1 / 2 , u is the electron speed normalized by the speed of light c in vacuum. The vector potential of FTFGLP can be expressed as:

[0073]

[0074] Here, a 0 Is the amplitude parameter, which characterizes the intensity of the laser pulse, with e / mc 2 Normalized. |A| is the amplitude of the vector potential, λ(μm) and I(W / cm 2 ) are the wavelength and intensity of the laser respectively, and the values ​​of m and e are 9.1×10 -31 kg, 1.6×10 -19 c. The formulas of parameters C and CL related to pulse width b and laser pulse width L are as follows:

[0075]

[0076]

[0077] In the formula, b 0 is the focal diameter; is the corresponding Rayleigh length. is the phase parameter of FTFGLP, and its expression is as follows:

[0078]

[0079] Among ...

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Abstract

The invention discloses an electron motion trail prediction method and a storage medium. The method comprises the following steps: determining a vector potential model of femtosecond tight focusing Gaussian laser pulses according to predetermined amplitude parameters, phase parameters, focus diameters, pulse widths and laser pulse widths of relativistic electrons; and determining a Lorentz equation, an energy equation and a speed component according to the vector potential model, and obtaining a motion track of the electron in a rectangular coordinate system according to the speed component. Based on the fact that electrons generate relativistic oscillation and corresponding full-space radiation under the drive of an electromagnetic field generated by laser pulses, a vector potential modelof femtosecond tightly-focused Gaussian laser pulses is established, and a speed component determination method of the electrons is determined through the model, so that the motion trails of the electrons can be predicted; the dynamics and all characteristics of the emission space distribution of a single electronic model can be obtained without adopting complex experimental equipment with high requirements, the motion trail of the electron is predicted, and the prediction precision is improved.

Description

technical field [0001] The present invention relates to a method and device for predicting electron trajectory, in particular to prediction of electronic trajectory of a single electron driven by a femtosecond tightly focused gaussian laser pulse (FTFGLP, femtosecond tightly focused gaussian laser pulse), and belongs to the field of electron radiation technology. Background technique [0002] Electronics is a branch of physics that studies the properties and behavior of electrons and electronic devices. It is developed with the research and utilization of electron motion and electromagnetic waves and their interaction as the core. After about a century of uninterrupted development and development, modern electronics has developed into one of the most striking professions and disciplines in the contemporary era. [0003] As we all know, in the past ten years, ultra-short-distance strong laser technology has made a huge leap forward. At the same time, the duration of laser p...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06F30/20G06F17/11
CPCG06F17/11G06Q10/04G06F30/20
Inventor 田友伟李凌霄黄正宇朱文欣
Owner NANJING UNIV OF POSTS & TELECOMM