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Title: Electron source for a mini ion trap mass spectrometer

An ion trap is described which operates in the regime between research ion traps which can detect ions with a mass resolution of better than 1:10{sup 9} and commercial mass spectrometers requiring 10{sup 4} ions with resolutions of a few hundred. The power consumption is kept to a minimum by the use of permanent magnets and a novel electron gun design. By Fourier analyzing the ion cyclotron resonance signals induced in the trap electrodes, a complete mass spectra in a single combined structure can be detected. An attribute of the ion trap mass spectrometer is that overall system size is drastically reduced due to combining a unique electron source and mass analyzer/detector in a single device. This enables portable low power mass spectrometers for the detection of environmental pollutants or illicit substances, as well as sensors for on board diagnostics to monitor engine performance or for active feedback in any process involving exhausting waste products. 10 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
170451
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 400102; 440800; PA: EDB-96:028753; SN: 96001517610
Patent Number(s):
US 5,477,046/A/
Application Number:
PAN: 8-427,326
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 19 Dec 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; MASS SPECTROMETERS; TRAPS; ELECTRON SOURCES; DESIGN; SIZE; ENERGY CONSUMPTION; PORTABLE EQUIPMENT; ENVIRONMENTAL MATERIALS; DRUGS; PROCESS CONTROL; DIAGNOSTIC TECHNIQUES; ENGINES; EXHAUST GASES; USES; MONITORING

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