Gas particles going from the excited state back to a lower state or further excited toa higher state is the probable approach of the particle disappearing from the excitedstate. This process is called excitation transferring of gas particles. Stimulating ...[继续阅读]

    The disappearance of charged particles is related to the condition of sustainingdischarge,and the disappearance of the charged particles in the gas mainly includesthe compound of charged particles,the diffusion of charged particles,the chargetransferring ...[继续阅读]

    [1] Xueji Xu,Dingchang Zhu (1996) Gas discharge physics. Fudan University Press,Shanghai[2] Zhancheng Wu,Xijun Zhang,Youzhi Hu (2012) Gas discharge. National Defence IndustryPress,Beijing[3] Qing Zhao,Shuzhang Liu,Honghui Tong (2009) Plasma technology and...[继续阅读]

    Townsend was the first to conduct gas discharge experiments. In a very thickdischarge tube,the gas pressure was fixed at 0.101 MPa and the electric fieldstrength was E=25 kV/cm unchanged. It was found that if there was no ultravioletradiation or electron ...[继续阅读]

    The α process where electrons collide and ionize with neutral particles has playedan important role in discharge development. Assuming that there is a gas spacebetween parallel-plate electrodes,when a certain voltage is exerted to the electrodes,the prima...[继续阅读]

    When no (ead- 1)positive ions bombard a cathode,because of γ process,duringa unit time,there will be other γn0 (ead-1) new electrons (secondary electrons)to escape from the cathode surface. These secondary electrons become the secondgeneration seeds of io...[继续阅读]

    All phenomena of current going through gas are known as gas conduction or a gasdischarge. Different operating conditions will produce different gas dischargephenomena with different discharge properties. In the study of the gas dischargephenomenon,usually...[继续阅读]

    A Townsend discharge area volt-ampere curve is shown in Fig.3.5 [2],which canbe divided into three parts: T0,T1 and T2. In the T0region,the applied voltagebetween the electrodes is low and the current flowing through the gas is small,asshown in the figure...[继续阅读]

    Formula (3.15) gives the total electron current reaching the anode:The expression above shows current growth patterns of non-self-sustainingdischarge and the conditions of the transition to self-sustaining discharge. It isassumed that δ=γ(eαd-1) < 1.If...[继续阅读]

    As described above,when the voltage between two discharge electrodes increases,the discharge current increases; when the applied voltage increases to a certainvalue,the discharge current will suddenly increase,thus discharge transits fromTownsend discharg...[继续阅读]