| Автор | D Cossutta |
| Автор | W Steckelmacher |
| Дата выпуска | 1960-11-01 |
| dc.description | A new mass-spectrometer leak detector was investigated based on the use of an iron-shrouded axially symmetrical magnetic lens for focusing ions in the low mass range. By taking precautions to keep the hydrogen background at a low and stable level (by the use of a mercury-vapour pump, liquid-air traps and clean construction) it was possible to use hydrogen as a search gas. Leaks of 5 × 10<sup>-10</sup> torr litre/s corresponding to an indication of a change in ion current reading of about 3 × 10<sup>-13</sup> A (for hydrogen) were consistently detected with an almost instantaneous response when testing equipment of a few litres volume using either hydrogen or helium as search gas. Some measurements of the mass spectrum obtained with this instrument are given. A very reliable and convenient version of a compressed-powder leak is also described. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Lens mass-spectrometer leak detector |
| Тип | paper |
| DOI | 10.1088/0950-7671/37/11/302 |
| Print ISSN | 0950-7671 |
| Журнал | Journal of Scientific Instruments |
| Том | 37 |
| Первая страница | 404 |
| Последняя страница | 410 |
| Аффилиация | D Cossutta; Edwards High Vacuum Ltd., Manor Royal, Crawley, Sussex |
| Аффилиация | W Steckelmacher; Edwards High Vacuum Ltd., Manor Royal, Crawley, Sussex |
| Выпуск | 11 |
