Ion Pump

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ion pump

[′ī‚än ‚pəmp]
A vacuum pump in which gas molecules are first ionized by electrons that have been generated by a high voltage and are spiraling in a high-intensity magnetic field, and the molecules are then attracted to a cathode, or propelled by electrodes into an auxiliary pump or an ion trap.

Ion Pump


a vacuum pump in which the scavenged gas is subjected to intense ionization and the positively charged ions that form are removed by an electric field. Ion pumps create a vacuum of 10-4 newtons per sq m, or 10-6 mm of mercury.

References in periodicals archive ?
For instance, instead of using drugs to block the release or uptake of various drugs or neurotransmitters, scientists could change the electricity regulating the ion pump, which would then change the amount of the drug or molecule inside, or outside, the cell.
Nasdaq:VARI) today introduced a new family of ion pumps designed to deliver one of the highest achievable vacuum environments in certain mass spectrometers, electron microscopes, and other analytical instruments requiring ultra high vacuum.
Another feature of the ion pump is that the current is a measure of pressure, often eliminating the need for an additional pressure gauge.
The ESCA and x-ray emission spectrometers, along with an ion pump, weigh nearly 600 kg and had to be attached to and mechanically balanced on the chamber to minimize chamber distortion during rotation.
To handle the heavy gas loads, every section of every sector gets an ion pump.
Tenders are invited for Microvac Ion Pump Controller
Tenders invited for Ion pump with tsp and controller
Chemists describe experimental methods for resolving the kinetics and dynamics of ion pumps, channels, and transporters in proteins.
Following an introductory chapter on the basics of fluorescence, the book covers: labeling of cells with fluorescent dyes; genetically encoded fluorescent proteins; nanoparticle fluorescence probes; quantitative analysis of fluorescent images; spectral imaging and unmixing; correlation of light with electron microscopy; fluorescence resonance energy transfer and applications; monitoring molecular dynamics in live cells using fluorescence photo-bleaching; time-resolved fluorescence in microscopy; fluorescence correlation spectroscopy; flow cytometry; fluorescence in diagnostic imaging; fluorescence in clinical diagnoses; immunochemical detection of analytes by using fluorescence; membrane organization; and probing the kinetics of ion pumps via voltage-sensitive fluorescent dyes.
Many other ion pumps have since been discovered, including the enzymes responsible for muscle contraction and the production of stomach acid.
Systems of this sort could potentially serve as models of cellular ion pumps and biomolecular motors (SN: 3/22/97, p.