End cap reflection for a time-of-flight mass spectrometer and method of using the same
US5814813A · kind A · utility
15Cited by
15References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jul 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/405
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflectron for use with a mass spectrometer that focuses ions having different energies contains a conductive end cap that is electrically connected to a first voltage. A conductive surface is electrically isolated from the end cap and connected to a second voltage. This conductive surface cooperates with the conductive end cap to establish an inner region in which a non-linear electric field exists. As a result, ions having different energies enter and exit the inner region at a common opening and, when within the inner region, are reflected without penetrating past the conductive surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.