Method and ion guide assembly for modulating a stream of ions
US11605532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2021 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Oct 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for, in an ion guide (10), modulating a stream of ions according to a modulation function, wherein the stream of ions includes at least N different ion species, wherein N is at least 1. This ion guide (10) forms an ion guide path, wherein the ions of the stream of ions are conveyed along the ion guide path in a conveying direction to form the stream of ions. The ion guide (10) includes an ion gate (12) arranged at an ion gate position on the ion guide path, wherein the ion gate (12) is adapted to provide an open state for allowing the ions passing the ion gate position when being conveyed along the ion guide path and a closed state for preventing the ions from passing the ion gate position. The ion guide (10) further includes a first arrangement (13) of conveying electrodes (230) arranged along the ion guide path, the first arrangement (13) of conveying electrodes (230) extending over a first section of the ion guide path, wherein the first section of the ion guide path reaches from at least the ion gate position downstream to at least a transition position on the ion guide path, wherein the first arrangement (13) of conveying electrodes (230) is a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.