Method and apparatus for ion cyclotron spectrometry
US7777182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Apr 30, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D59/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ion cyclotron spectrometer may include a vacuum chamber that extends at least along a z-axis and means for producing a magnetic field within the vacuum chamber so that a magnetic field vector is generally parallel to the z-axis. The ion cyclotron spectrometer may also include means for producing a trapping electric field within the vacuum chamber that includes at least a first section that induces a first magnetron effect that increases a cyclotron frequency of an ion and at least a second section that induces a second magnetron effect that decreases the cyclotron frequency of an ion. The cyclotron frequency changes induced by the first and second magnetron effects substantially cancel one another so that an ion traversing the at least first and second sections will experience no net change in cyclotron frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.