Spiral electrostatic analyzer
US10615024B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/261
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrostatic analyzer (ESA) includes a coaxial structure having an outer conductive cylinder, an inner conductive cylinder, and one or more pathways disposed therebetween and extending from a first end to a second end of the coaxial structure. The outer conductive cylinder and the inner conductive cylinder may each be structurally configured to receive a bias voltage for creation of a predetermined electric field therebetween that allows for passage of charged particles with a predetermined energy/charge band along a helical path through the coaxial structure. The ESA may further include an entrance filter on the first end of the coaxial structure that defines a plurality of openings aligned at a predetermined angle thereby limiting one or more fields of view between a pathway through the ESA and the external environment to filter particles, by their trajectory, from entering the pathway for analysis by the ESA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.