Ion trap with spatially extended ion trapping region
US8946626B2 · kind B2 · utility
21Cited by
11References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4285
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mass or mass to charge ratio selective ion trap is disclosed having an increased charge storage capacity. A RF voltage acts to confine ions in a first (y) direction within the ion trap. A DC voltage and/or an RF voltage acts to confine ions in a second (x) direction within the ion trap. A quadratic DC potential well acts to confine ions in a third (z) direction within the ion trap. Ions are excited in the third (z) direction and are caused to be mass or mass to charge ratio selectively ejected in the third (z) direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.