| Автор | D K Davies |
| Автор | F Llewellyn Jones |
| Автор | C G Morgan |
| Дата выпуска | 1964-01-01 |
| dc.description | A quantitative analysis of ionization growth times measured in pure helium between plane parallel silver electrodes (d = 0.817 cm) for 5.07 < po < 38.51 mmHg, in the range 8.61 < Es/po < 38.08 v cm<sup>-1</sup> mmHg<sup>-1</sup>, for overvoltages up to 6% has been made. This shows that the dominant secondary ionization process at the higher pressures is delayed photoelectric emission due to the incidence at the cathode of collision-induced non-resonance radiation produced in the volume destruction of atoms in the 2 <sup>1</sup>S metastable state in two-body collisions in the gas. The cross section computed for this process is about 3 × 10<sup>-20</sup> cm<sup>2</sup>/atom. At the lower pressures used secondary electron emission due to the incidence of helium positive ions plays an increasingly important role, contributing as much as 75% of the secondary emission at p = 5.07 mmHg. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The contribution of positive ions and non-resonance radiation to secondary ionization processes in helium |
| Тип | paper |
| DOI | 10.1088/0370-1328/83/1/316 |
| Print ISSN | 0370-1328 |
| Журнал | Proceedings of the Physical Society |
| Том | 83 |
| Первая страница | 137 |
| Последняя страница | 144 |
| Аффилиация | D K Davies; Department of Physics, University College of Swansea |
| Аффилиация | F Llewellyn Jones; Department of Physics, University College of Swansea |
| Аффилиация | C G Morgan; Department of Physics, University College of Swansea |
| Выпуск | 1 |
