Resources Contact Us Home
Ion interface for mass spectrometer

Image Number 2 for United States Patent #5756995.

A heated capillary tube is axially supported in center of a housing under cuum. One end of the capillary tube receives ions from an ion source. The other end of the capillary tube terminates adjacent to the inner side of a flat plate having an orifice. A transport tube is connected to the outer side of the flat plate and has an open outer end. A first electrical field exists between the capillary tube and the plate to control the flow of ions. A second electrical field exists downstream of the plate, and the tube is disposed within the second electrical field. The transport tube allows for more efficient focusing of ions by the electrical and aerodynamic means to the mass spectrometer. A mechanical valve may be coupled to the capillary tube to independently control the flow of ions and the entire probe may be removed without compromising the vacuum in the mass spectrometer.

  Recently Added Patents
Compact ion accelerator source
Nuclear fuel assembly bottom nozzle
MRAM with sidewall protection and method of fabrication
Television receiver
Computer product, information retrieval method, and information retrieval apparatus
Music composition automation including song structure
Video editing apparatus
  Randomly Featured Patents
Combined radio and cassette player
Method and apparatus for releasably attaching a polishing pad to a chemical-mechanical planarization machine
Machine for chamfering pieces of hide, leather and synthetic materials of small thickness, particularly for shoe and leather factories
Actuator controller for selecting a communication language
Cleaning and lapping apparatus and method for electrographic printers
Tubular lining material for pipe lines
Photodeposition of metals on a non-conductive substrate
Ring compounds
Device to transmit and receive data for remote control of hearing devices
Skylight assembly