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Title: Method for analyzing the mass of a sample using a cold cathode ionization source mass filter

Abstract

An improved quadrupole mass spectrometer is described. The improvement lies in the substitution of the conventional hot filament electron source with a cold cathode field emitter array which in turn allows operating a small QMS at much high internal pressures then are currently achievable. By eliminating of the hot filament such problems as thermally "cracking" delicate analyte molecules, outgassing a "hot" filament, high power requirements, filament contamination by outgas species, and spurious em fields are avoid all together. In addition, the ability of produce FEAs using well-known and well developed photolithographic techniques, permits building a QMS having multiple redundancies of the ionization source at very low additional cost.

Inventors:
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174534
Patent Number(s):
6,633,041
Application Number:
10/245,656
Assignee:
Sandia National Laboratories (Livermore, CA)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Felter, Thomas E. Method for analyzing the mass of a sample using a cold cathode ionization source mass filter. United States: N. p., 2003. Web.
Felter, Thomas E. Method for analyzing the mass of a sample using a cold cathode ionization source mass filter. United States.
Felter, Thomas E. Tue . "Method for analyzing the mass of a sample using a cold cathode ionization source mass filter". United States. https://www.osti.gov/servlets/purl/1174534.
@article{osti_1174534,
title = {Method for analyzing the mass of a sample using a cold cathode ionization source mass filter},
author = {Felter, Thomas E.},
abstractNote = {An improved quadrupole mass spectrometer is described. The improvement lies in the substitution of the conventional hot filament electron source with a cold cathode field emitter array which in turn allows operating a small QMS at much high internal pressures then are currently achievable. By eliminating of the hot filament such problems as thermally "cracking" delicate analyte molecules, outgassing a "hot" filament, high power requirements, filament contamination by outgas species, and spurious em fields are avoid all together. In addition, the ability of produce FEAs using well-known and well developed photolithographic techniques, permits building a QMS having multiple redundancies of the ionization source at very low additional cost.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {10}
}

Patent:

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