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
Dehydratable hygiene articles
Mobile terminal including stellar body watching hookup communications function
Supplier capability methods, systems, and apparatuses for extended commerce
Configurable caged ball insert for a downhole tool
High voltage circuit for electrical stimulation
Vacuum cleaner filter adapter ring
Flash multi-level threshold distribution scheme
  Randomly Featured Patents
Zoom lens system having a short total length
Modulated vehicle safety light system
Mechanism for agitating the toner in the replenisher of an electrophotographic machine
Predictive resource identification and phased delivery of structured documents
Packet data comparator as well as virus filter, virus checker and network system using the same
Synchronous semiconductor memory device having clock synchronization circuit and circuit for controlling on/off of clock tree of the clock synchronization circuit
One-to-one matching in a contact center
Apparatus for analyzing distribution of contact pressure in temporomandibular joint
Ladder platform
Combination portable children's toilet and toilet trainer