| Автор | C R Negus |
| Автор | N J Peacock |
| Дата выпуска | 1979-01-01 |
| dc.description | The formation of local regions of the high-temperature, high-pressure plasma, 'hot-spots', in a vacuum spark is studied using X-ray spectroscopy and holography. Measurements of the dimensions of the hot-spots, of the absolute flux of radiation and of the spectral composition of the X-ray emission, have been analysed to give order-of-magnitude values for the local electron density, temperature and plasma lifetime. It appears that the plasma pressure is >or approximately=10<sup>7</sup> atm and that the formation of the hot spots requires intense heating rates more commonly associated with focused laser beams, i.e. >or approximately=10<sup>15</sup> W cm<sup>-3</sup>. It is probable that in the vacuum spark electron beams are responsible for plasma heating. Possible mechanisms for concentrating energy deposition in localised regions are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Local regions of high-pressure plasma in a vacuum spark |
| Тип | paper |
| DOI | 10.1088/0022-3727/12/1/011 |
| Electronic ISSN | 1361-6463 |
| Print ISSN | 0022-3727 |
| Журнал | Journal of Physics D: Applied Physics |
| Том | 12 |
| Первая страница | 91 |
| Последняя страница | 111 |
| Аффилиация | C R Negus; Culham Lab., Abingdon, UK |
| Аффилиация | N J Peacock; Culham Lab., Abingdon, UK |
| Выпуск | 1 |
