冷阴极气体放电的伏安特性如图1所示。通常所谓的辉光放电是指正常辉光放电(EF)和异常辉光放电(FG),二者除在伏安特性上有区别外,它们的阴极位降区的宽度也不同。前者不随电流而变,后者随电流的增加而减小,如图2所示(图中下标n、an分别表示正常辉光放电和异常辉光放电)。 Cold cathode gas discharge voltage characteristics shown in Figure 1. The so-called glow discharge refers to the normal glow discharge (EF) and abnormal glow discharge (FG), both in addition to the volt-ampere characteristics are different, their width of the cathode landing zone is also different. The former does not vary with the current, the latter decreases with the current increases, as shown in Figure 2 (the subscript n, an, respectively, normal glow discharge and abnormal glow discharge).