The work experimentally demonstrates the fundamental difference between the constriction in helium and other inert gases (argon, neon). Despite the visual similarity, during the constriction of the positive column of a glow discharge in helium, only a compression of the emission of spectral lines is observed. In the constricted helium discharge there is no formation of a thin channel of current which is evident from the bremsstrahlung measurements. This phenomenon can be called the optical constriction. Unlike neon and argon, where the current cord is formed because of losses of charged particles in the volume due to the dissociative recombination, the discharge in helium is controlled by the ambipolar diffusion. Moreover, while in neon and argon constriction arises in times of hundreds of microseconds—units of milliseconds after the ionization balance establishment, constricted discharge in helium forms in times about 2 min after the establishment of the thermal balance between...

中文翻译：

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氦气辉光放电收缩的特殊性

这项工作通过实验证明了氦气和其他惰性气体（氩气，氖气）的收缩率之间的根本区别。尽管外观上相似，但在氦气辉光放电的正列收缩期间，仅观察到光谱线发射的压缩。在狭窄的氦气放电中，没有形成细电流通道，这从the致辐射测量中可以明显看出。这种现象可以称为光学收缩。与氖气和氩气不同，电流线是由于解离复合而导致体积中带电粒子损失而形成电流线的，氦气的放电受双极性扩散控制。此外，