Noise reduction in negative-ion quadrupole mass spectrometry
Abstract
A quadrupole mass spectrometer (QMS) system is described having an ion source, quadrupole mass filter, and ion collector/recorder system. A weak, transverse magnetic field and an electron collector are disposed between the quadrupole and ion collector. When operated in negative ion mode, the ion source produces a beam of primarily negatively-charged particles from a sample, including electrons as well as ions. The beam passes through the quadrupole and enters the magnetic field, where the electrons are deflected away from the beam path to the electron collector. The negative ions pass undeflected to the ion collector where they are detected and recorded as a mass spectrum.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6260685
- Patent Number(s):
- 5204530
- Application Number:
- PPN: US 7-813730
- Assignee:
- IMS; EDB-93-121420
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 27 Dec 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; MASS SPECTROMETERS; DESIGN; OPERATION; ELECTRONS; FILTERS; ION SOURCES; IONS; MAGNETIC FIELDS; MASS SPECTRA; MASS SPECTROSCOPY; MATERIALS; PARTICLE PRODUCTION; QUADRUPOLES; CHARGED PARTICLES; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; MEASURING INSTRUMENTS; MULTIPOLES; SPECTRA; SPECTROMETERS; SPECTROSCOPY; 400102* - Chemical & Spectral Procedures; 440800 - Miscellaneous Instrumentation- (1990-)
Citation Formats
Chastagner, P. Noise reduction in negative-ion quadrupole mass spectrometry. United States: N. p., 1993.
Web.
Chastagner, P. Noise reduction in negative-ion quadrupole mass spectrometry. United States.
Chastagner, P. Tue .
"Noise reduction in negative-ion quadrupole mass spectrometry". United States.
@article{osti_6260685,
title = {Noise reduction in negative-ion quadrupole mass spectrometry},
author = {Chastagner, P},
abstractNote = {A quadrupole mass spectrometer (QMS) system is described having an ion source, quadrupole mass filter, and ion collector/recorder system. A weak, transverse magnetic field and an electron collector are disposed between the quadrupole and ion collector. When operated in negative ion mode, the ion source produces a beam of primarily negatively-charged particles from a sample, including electrons as well as ions. The beam passes through the quadrupole and enters the magnetic field, where the electrons are deflected away from the beam path to the electron collector. The negative ions pass undeflected to the ion collector where they are detected and recorded as a mass spectrum.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 20 00:00:00 EDT 1993},
month = {Tue Apr 20 00:00:00 EDT 1993}
}
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