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Title: Sensitive glow discharge ion source for aerosol and gas analysis

Abstract

A high sensitivity glow discharge ion source system for analyzing particles includes an aerodynamic lens having a plurality of constrictions for receiving an aerosol including at least one analyte particle in a carrier gas and focusing the analyte particles into a collimated particle beam. A separator separates the carrier gas from the analyte particle beam, wherein the analyte particle beam or vapors derived from the analyte particle beam are selectively transmitted out of from the separator. A glow discharge ionization source includes a discharge chamber having an entrance orifice for receiving the analyte particle beam or analyte vapors, and a target electrode and discharge electrode therein. An electric field applied between the target electrode and discharge electrode generates an analyte ion stream from the analyte vapors, which is directed out of the discharge chamber through an exit orifice, such as to a mass spectrometer. High analyte sensitivity is obtained by pumping the discharge chamber exclusively through the exit orifice and the entrance orifice.

Inventors:
 [1]
  1. Knoxville, TN
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE
OSTI Identifier:
913445
Patent Number(s):
7,256,396
Application Number:
11/172,330
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
DOE Contract Number:
AC05-000R22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCES

Citation Formats

Reilly, Peter T. A. Sensitive glow discharge ion source for aerosol and gas analysis. United States: N. p., 2007. Web.
Reilly, Peter T. A. Sensitive glow discharge ion source for aerosol and gas analysis. United States.
Reilly, Peter T. A. Tue . "Sensitive glow discharge ion source for aerosol and gas analysis". United States. doi:. https://www.osti.gov/servlets/purl/913445.
@article{osti_913445,
title = {Sensitive glow discharge ion source for aerosol and gas analysis},
author = {Reilly, Peter T. A.},
abstractNote = {A high sensitivity glow discharge ion source system for analyzing particles includes an aerodynamic lens having a plurality of constrictions for receiving an aerosol including at least one analyte particle in a carrier gas and focusing the analyte particles into a collimated particle beam. A separator separates the carrier gas from the analyte particle beam, wherein the analyte particle beam or vapors derived from the analyte particle beam are selectively transmitted out of from the separator. A glow discharge ionization source includes a discharge chamber having an entrance orifice for receiving the analyte particle beam or analyte vapors, and a target electrode and discharge electrode therein. An electric field applied between the target electrode and discharge electrode generates an analyte ion stream from the analyte vapors, which is directed out of the discharge chamber through an exit orifice, such as to a mass spectrometer. High analyte sensitivity is obtained by pumping the discharge chamber exclusively through the exit orifice and the entrance orifice.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 14 00:00:00 EDT 2007},
month = {Tue Aug 14 00:00:00 EDT 2007}
}

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