Apparatus for preparing a sample for mass spectrometry

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869290

Villa-Aleman, Eliel ^[1]

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1. Aiken, SC

An apparatus for preparing a sample for analysis by a mass spectrometer system. The apparatus has an entry chamber and an ionization chamber separated by a skimmer. A capacitor having two space-apart electrodes followed by one or more ion-imaging lenses is disposed in the ionization chamber. The chamber is evacuated and the capacitor is charged. A valve injects a sample gas in the form of sample pulses into the entry chamber. The pulse is collimated by the skimmer and enters the ionization chamber. When the sample pulse passes through the gap between the electrodes, it discharges the capacitor and is thereby ionized. The ions are focused by the imaging lenses and enter the mass analyzer, where their mass and charge are analyzed.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• DOE Contract Number: AC09-89SR18035
• Assignee: United States of America as represented by United State (Washington, DC)
• Patent Number(s): US 5311016
• OSTI ID: 869290
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
preparing
sample
mass
spectrometry
analysis
spectrometer
entry
chamber
ionization
separated
skimmer
capacitor
space-apart
electrodes
followed
ion-imaging
lenses
disposed
evacuated
charged
valve
injects
gas
form
pulses
pulse
collimated
enters
passes
gap
discharges
ionized
focused
imaging
enter
analyzer
charge
analyzed
sample pulse
mass spectrometer
mass spectrometry
sample gas
ionization chamber
mass analyzer
chamber separated
pulse passes
imaging lenses
imaging lens
apart electrodes
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