Toroidal low-field reactive gas source
US6552296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Sep 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/32862
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved toroidal low-field plasma source allows plasma ignition within a wider range of gas conditions than permitted by prior art plasma sources. Power efficiency of the plasma source is improved by automatically adjusting the power delivered to the plasma based on the load to the power supply. The plasma source can be operated over a wider pressure range than allowed by prior art plasma sources. The plasma source can be operated so as to increase the output of atomic species from the source. The plasma source can be operated to increase the etch rate of organic materials. The plasma source can efficiently remove hazardous gas compounds from effluent gas streams by converting them into scrubbable products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.