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Title: Pulsed discharge ionization source for miniature ion mobility spectrometers

Abstract

A method and apparatus is disclosed for flowing a sample gas and a reactant gas (38, 43) past a corona discharge electrode (26) situated at a first location in an ion drift chamber (24), applying a pulsed voltage waveform comprising a varying pulse component and a dc bias component to the corona discharge electrode (26) to cause a corona which in turn produces ions from the sample gas and the reactant gas, applying a dc bias to the ion drift chamber (24) to cause the ions to drift to a second location (25) in the ion drift chamber (24), detecting the ions at the second location (25) in the drift chamber (24), and timing the period for the ions to drift from the corona discharge electrode to the selected location in the drift chamber.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175149
Patent Number(s):
6822225
Application Number:
10/254,749
Assignee:
UT-Battelle LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Xu, Jun, Ramsey, J. Michael, and Whitten, William B. Pulsed discharge ionization source for miniature ion mobility spectrometers. United States: N. p., 2004. Web.
Xu, Jun, Ramsey, J. Michael, & Whitten, William B. Pulsed discharge ionization source for miniature ion mobility spectrometers. United States.
Xu, Jun, Ramsey, J. Michael, and Whitten, William B. Tue . "Pulsed discharge ionization source for miniature ion mobility spectrometers". United States. https://www.osti.gov/servlets/purl/1175149.
@article{osti_1175149,
title = {Pulsed discharge ionization source for miniature ion mobility spectrometers},
author = {Xu, Jun and Ramsey, J. Michael and Whitten, William B.},
abstractNote = {A method and apparatus is disclosed for flowing a sample gas and a reactant gas (38, 43) past a corona discharge electrode (26) situated at a first location in an ion drift chamber (24), applying a pulsed voltage waveform comprising a varying pulse component and a dc bias component to the corona discharge electrode (26) to cause a corona which in turn produces ions from the sample gas and the reactant gas, applying a dc bias to the ion drift chamber (24) to cause the ions to drift to a second location (25) in the ion drift chamber (24), detecting the ions at the second location (25) in the drift chamber (24), and timing the period for the ions to drift from the corona discharge electrode to the selected location in the drift chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 23 00:00:00 EST 2004},
month = {Tue Nov 23 00:00:00 EST 2004}
}