MARS-96     ROBOTIC SPACECRAFT MISSION TO MARS. Brief description
Table of contents
Inroduction
Scientific goals
Scheme of the mission
Spacecraft
Orbiter
Payload of the Orbiter
Scientific goals of
the experiments
Description of
the instruments
Small Stations
Penetrators
Conclusion
 Experiment: MAK

QUADRUPLE MASS SPECTROMETER

MEASUREMENTS OF THE NEUTRAL AND ION COMPONENTS IN THE UPPER ATMOSPHERE OF MARS



Main scientific objectives:

  • the composition of the Martian upper atmosphere and ionosphere ;
  • measurements of height profiles of the atmosphere ion and neutral composition;
  • measurements and updating of the isotope ratios О17/O18, Ne20 /Ne22 , Ne20 /Ne21 , Ar36 /Ar38
  • measurements of seasonal and diurnal variations of the Martian upper atmosphere and ionosphere.


    • Instrument:a quadruple mass-spectrometer which operates in ion and neutral atom recording modes.

    Main characteristics:
    atomic mass range (a.m.u.) 1-60
    resolutionR= M
    dynamic range 107
    sensitivity nmin (см-3 )
    for ions
    for neutrals
    for neutrals H 2 and H
    10-5
    104
    106
    time needed to measure one spectrum 1с
    mass10kg




    SCHEME of the MASS-SPECTROMETER

    1 - housing, 2 - electrostatic lenses, 3 - cathode, 4 - ionizer, 5 - roods, 6 - reflecting electrode, 7 - electron channel multiplier


    Cooperation: Russia,Finland.

    Contact persons:E. Evlanov (PI) eevlanov@vmcom.lz.space.ru



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