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Atmospheric environmental electron beam plasma parameter acquisition method

A technology of atmospheric environment and plasma, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as plasma size differences, and achieve the effect of improving accuracy

Active Publication Date: 2014-03-05
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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Problems solved by technology

[0003] In order to overcome the existing technical defect of using a fluid model to track the transmission process of an electron beam, which results in a large difference between the obtained plasma size and the experimental value, the present invention provides a method for obtaining electron beam plasma parameters in an atmospheric environment

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  • Atmospheric environmental electron beam plasma parameter acquisition method

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Embodiment Construction

[0028] The atmospheric environment electron beam plasma parameter acquisition method of the present invention includes the steps of establishing the transmission and collision model of the electron beam, using the model to dynamically scan and track the transmission process of the electron beam in the gas thin layer, and recording the energy loss data of the electron beam Steps, a step of calibrating the gas temperature by using energy loss data, and a step of obtaining plasma parameters according to the calibrated temperature or energy loss data.

[0029] A concrete example is figure 1 shown, including the following steps:

[0030] (1) Using the electron beam heating model, the estimated temperature field is obtained, and the temperature data is input into the Monte Carlo energy loss calculation module 1. The electron beam action area is divided into 1000 gas thin layers, and the thickness of each gas thin layer is 1mm. Initialize the parameters (density) of the thin gas lay...

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Abstract

An atmospheric environmental electron beam plasma parameter acquisition method is characterized in that transport and energy loss of electron beams in atmosphere is handled by means of multi-layer meshing and the Monte Carlo method, the influence of energy loss upon gas density is considered, electron beam energy is dynamically coupled by means of an estimation-correction method, and high-energy particles are tracked by means of a dynamic scanning method. The method has the advantages that the problems with multi-dimension and multiple physical fields in the acquisition of atmospheric environmental electron beam plasma parameters are solved, the influence of energy loss upon gas density in the transport path is considered, and atmospheric environmental electron beam plasma can be studied accurately.

Description

technical field [0001] The invention relates to a method for acquiring electron beam plasma parameters. Background technique [0002] In the Chinese journal "Acta Physica" in 2006, Volume 55, No. 7, entitled "Numerical Simulation Research on the Process of Large-scale Plasma Generated by Electron Beam", a four-component one-dimensional mixing model was established, which has a large impact on the electron beam injected into the atmosphere. Numerical simulations have been carried out for the process of scale plasma. The model uses a fluid model to simulate the transmission process of the electron beam, and calculates the energy loss of the electron beam in the gas, and obtains the ionization rate of the electron beam according to the energy loss, and then calculates the parameters of the electron beam plasma. This is an analytical method for simulating and calculating the plasma parameters of the electron beam, which can quickly obtain the plasma parameters, but its disadvan...

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Application Information

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IPC IPC(8): G06F19/00G06F17/50
Inventor 邓永锋韩先伟谭畅
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH