| Автор | H Wroe |
| Дата выпуска | 1958-12-01 |
| dc.description | Self-sustaining d.c. arc discharges between solid metal electrodes at pressures down to 10<sup>4</sup> mm of mercury have been investigated. At pressures below a few millimetres of mercury, arcs on both refractory and non-refractory metals behaved like "cold cathode" arcs. "Spot-splitting" and "reverse driving" of the cathode spot were observed and a form of instability is described. Reverse driving of the cathode spot or spots by the magnetic field set up by the current in the electrodes themselves is suggested as the cause of the instability.A magnetic method of stabilizing the discharge is described, requiring an axial magnetic field of at least 500 G. A marked constriction of the positive column was caused with this value of field.The magnetically stablized discharge has been used experimentally to produce short welds on 1/8 in thick mild steel plate at 1 μ of mercury pressure using about 40 A at 30 V. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The magnetic stabilization of low pressure d.c. arcs |
| Тип | paper |
| DOI | 10.1088/0508-3443/9/12/307 |
| Print ISSN | 0508-3443 |
| Журнал | British Journal of Applied Physics |
| Том | 9 |
| Первая страница | 488 |
| Последняя страница | 491 |
| Аффилиация | H Wroe; Metropolitan-Vickers Electrical Co. Ltd., Trafford Park, Manchester |
| Выпуск | 12 |
