Quadrupole mass spectrometers
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United States of America Patent
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-
Nov 24, 1987
Grant Date -
N/A
app pub date -
Jan 31, 1986
filing date -
Feb 7, 1985
priority date (Note) -
Expired
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Abstract
A quadrupole mass spectrometer has a housing containing pole rods which define a passage through which ions can pass when the housing is evacuated. RF voltage is supplied to the pole rods to cause ions only of a predetermined mass/charge ratio to pass through the passage. Such ions are detected and their rate of receipt is inducted. The temperature of the RF supply is controlled to enable more consistent analytical results to be attained.
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