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spektrometria hmotnostná, s použitím sekundárnych iónov

  1. Subject h.spektrometria hmotnostná, s použitím sekundárnych iónov
    Subject h.Spectrometry, Mass, Secondary Ion
    Entry termsSIMS mikroskopia
    mikroskopia spektrometrická, s použitím sekundárnych iónov
    spektroskopia hmotnostná, s použitím sekundárnych iónov
    English X referencesMass Spectrometry, Secondary Ion
    Mass Spectroscopy, Secondary Ion
    SIMS Microscopy
    Secondary Ion Mass Spectrometry
    Secondary Ion Mass Spectrometry Microscopy
    Spectroscopy, Mass, Secondary Ion
    Scope note in EnglishA mass-spectrometric technique that is used for microscopic chemical analysis. A beam of primary ions with an energy of 5-20 kiloelectronvolts (keV) bombards a small spot on the surface of the sample under ultra-high vacuum conditions. Positive and negative secondary ions sputtered from the surface are analyzed in a mass spectrometer in regards to their mass-to-charge ratio. Digital imaging can be generated from the secondary ion beams and their intensity can be measured. Ionic images can be correlated with images from light or other microscopy providing useful tools in the study of molecular and drug actions.
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