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Large-Volume \hbox {N}_{2} Plasma Induced by Electron Beam at High Pressure

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4 Author(s)
Xuekai Pei ; State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China ; Peng Zhang ; Kai Chen ; Xinpei Lu

It is still a challenge to generate large-volume nonequilibrium plasma at high pressure. In this paper, a large-volume nonequilibrium plasma which has a diameter of 50 cm and a length of 35 cm at 20-kPa N2 induced by electron beam (EB) is reported. The experimental results are consistent with the results simulated by software EGSnrc. The emission spectra reveal that the plasma contains abundant excited N2* and N2+ *. It is similar to the traditional plasma generation techniques such as pulse discharge. The rotational and vibrational temperatures of the plasma next to the EB entrance are about 550 K and 1700 K, respectively. The results of the time evolution experiment show that there are no obvious influences of space charge on the plasma.

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Plasma Science, IEEE Transactions on  (Volume:41 ,  Issue: 3 )