A method for real-time in-situ measurement of plasma armature parameters in bore

Abstract

The invention belongs to the technical field of plasma parameter measurement, and discloses an in-bore plasma armature parameter real-time in-situ measurement method. The method comprises the following steps that step one: quartz windows are embedded in the internal wall of an electromagnetic rail gun bore; step two: emission spectrum is generated; step three: the emission spectrum of a plasma armature is acquired; and step four: real-time in-situ measurement of in-bore plasma armature parameters, such as movement speed, electron temperature, electron density, vibration temperature and rotation temperature, is performed. The quartz windows are embedded in different positions of the internal wall of the electromagnetic rail gun bore, and the plasma armature passes the emission spectrum radiated by the quartz widows without contacting the plasma armature or changing the movement state of the plasma armature so that real-time in-situ acquisition of the key parameters, such as movement speed, electron temperature, electron density, vibration temperature and rotation temperature, can be realized.

Description

technical field [0001] The invention belongs to the technical field of plasma parameter measurement, and relates to a method for measuring plasma armature parameters in a chamber. Background technique [0002] The plasma armature electromagnetic emission technology has the characteristics of a high emission speed limit, which is incomparable to the traditional solid armature. Research on the plasma armature electromagnetic emission technology has been carried out at home and abroad. 1.27g, 5km / s and 50g, 3km / s levels. [0003] The Institute of Advanced Technology of the University of Texas in the United States has carried out research on plasma armature electromagnetic orbit launch technology with the support of the US Space Science Research Center. Its goal is to launch a launch exit speed exceeding 7km / s and be able to launch a load of about 10kg to the low earth orbit. [0004] However, due to serious arc ablation problems and high-speed gouging, the development of plasm...

AI Technical Summary

Problems solved by technology

However, the method of using emission spectroscopy to measure the plasma armature parameters of the armature railgun has not been reported, because the direction of traditional collection of spectra is usually perpendicular to the emission direction of the plasma armature, that is, in the direction of the nozzle of the electromagnetic railgun Late tail collection, so the detection efficiency is low, and it is impossible to measure the moving speed of the plasma armature in the bore

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