Abstract
Abstract A study has been made of some aspects of the disturbances often seen in moving Striations in neon positive columns, using three tubes with different diameters. When the column contains cathode and anode sections, and both are not occupied by regular striations, the disturbances occur almost entirely in one section or the other, but not both. They start near the negative end of a section and move towards the positive end with velocity of the same order as that of ordinary positive moving striations. They could be eliminated from the anode section in the narrow tube by adjusting the length of the section to be an integral number of wavelengths of the positive striations, and, in the wider tubes by increasing the current. The behaviour of disturbances in the cathode section was studied in less detail. A comparison has been made between the disturbance waves, and negative striations (Donahue acid Dieke) and waves of stratification (Pekarek).
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