Miniature charged particle trap with elongated trapping region for mass spectrometry

Patent metadata

Field	Value
Publication number	US-9252005-B2
Application number	US-201414456686-A
Country	US
Kind code	B2
Filing date	Aug 11, 2014
Priority date	Mar 15, 2013
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A miniature electrode apparatus is disclosed for trapping charged particles, the apparatus including, along a longitudinal direction: a first end cap electrode; a central electrode having an aperture; and a second end cap electrode. The aperture is elongated in the lateral plane and extends through the central electrode along the longitudinal direction and the central electrode surrounds the aperture in a lateral plane perpendicular to the longitudinal direction to define a transverse cavity for trapping charged particles.

First claim

What is claimed is:

1. A mass spectrometry system, comprising:
an ion source;
an ion detector; and
an ion trap positioned between the ion source and ion detector, the ion trap comprising:
first and third electrodes positioned on opposite sides of the ion trap and separated by a distance of less than about 2 mm; and
a second electrode positioned between the first and third electrodes and comprising an aperture that extends through the second electrode,

wherein the apertu…

Assignees

• Univ North Carolina

Inventors

• Ramsey J Michael
• Schultze Kevin

Classifications

• H01J49/4235

  Electricity · mapped topic

• H01J49/0013

  Electricity · mapped topic

• H01J49/06

  Electricity · mapped topic

• H01J49/4245 Primary

  Electricity · mapped topic

• H01J49/062

  Electricity · mapped topic