Patent · US Expired

Secondary ion generator detector for time-of-flight mass spectrometry

US6294790A · kind A · utility

44Cited by
6References
43Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 22, 1998
Grant dateSep 25, 2001
Priority date
Expiry dateSep 22, 2018

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01J49/025
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

An ion detector includes a secondary charged particle generator that generates secondary charged particles in response to primary ions that engage the secondary charged particle generator. The secondary charged particle generator has an electrostatic potential that repels the secondary charged particles toward an electro-emissive detector that generates electrons in response to primary ions and secondary charged particles that engage the electro-emissive detector The electro-emissive detector has a field that attracts the secondary charged particles. An anode is provided for detecting electrons generated by the electro-emissive detector and for generating a signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.