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Title: Noise reduction in negative-ion quadrupole mass spectrometry

Abstract

A quadrupole mass spectrometer (QMS) system 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:
 [1]
  1. (3134 Natalie Cir., Augusta, GA 30909-2748)
Issue Date:
Research Org.:
WESTINGHOUSE SAVANNAH RIVER CO
OSTI Identifier:
868753
Patent Number(s):
5204530
Assignee:
Chastagner, Philippe (3134 Natalie Cir., Augusta, GA 30909-2748) SRS
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
noise; reduction; negative-ion; quadrupole; mass; spectrometry; spectrometer; qms; source; filter; collector; recorder; weak; transverse; magnetic; field; electron; disposed; operated; negative; mode; produces; beam; primarily; negatively-charged; particles; sample; including; electrons; passes; enters; deflected; path; pass; undeflected; detected; recorded; spectrum; quadrupole mass; mass filter; beam passes; mass spectrometer; charged particles; magnetic field; charged particle; mass spectrometry; beam path; transverse magnetic; electron collector; source produces; noise reduction; /250/

Citation Formats

Chastagner, Philippe. Noise reduction in negative-ion quadrupole mass spectrometry. United States: N. p., 1993. Web.
Chastagner, Philippe. Noise reduction in negative-ion quadrupole mass spectrometry. United States.
Chastagner, Philippe. Fri . "Noise reduction in negative-ion quadrupole mass spectrometry". United States. https://www.osti.gov/servlets/purl/868753.
@article{osti_868753,
title = {Noise reduction in negative-ion quadrupole mass spectrometry},
author = {Chastagner, Philippe},
abstractNote = {A quadrupole mass spectrometer (QMS) system 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 = {1993},
month = {1}
}

Patent:

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