Converging multipole ion guide for ion beam shaping
US8193489B2 · kind B2 · utility
6Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/421
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multipole ion guide comprises rods disposed about an axis, each of the rods having a first end and a second end remote from the first end. Each of the rods is disposed at a respective greater distance from the axis at the first end than at the second end. The multipole ion guide comprises means for applying a radio frequency (RF) voltage between adjacent pairs of rods, wherein the RF voltage creates a multipole field in a region between the rods; and means for applying a direct current (DC) voltage drop along a length of each of the rods. A mass spectroscopy system is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.