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: FONEMA

THE FAST OMNIDIRECTIONAL NON-SCANNING ION ENERGY-MASS ANALYZER

INVESTIGATION OF DYNAMICS AND ORIGIN NEAR-MARS PLASMA WITH HIGH-TIME RESOLUTION MEASUREMENTS OF ION SPECIES



Main scientific objectives:to investigate the fine structure, dynamics and origin of near -Martian plasma with measurements of 3-d distribution functions of hot ions species with high time resolution.


Instrument consists of 36 separated Thomson parabola energy-mass analyzers followed by position-sensitive detectors. The field of each analyzer is determined by multi-hole collimator and hyperbolic electrostatic mirror. The analyser allows to measure 3-d distribution function of several ions species in wide energy range.



Main characteristics:
Energy range 20 eV/q - 8 keV/q
Energy resolution, DE/E0,2 - 10 МэВ
Total field of view 4 х 3,14
Angular resolution 30°х 60°
Geometric factor 4,2·10-5 sm2 ster
Mass range 1- 30 AMU
Mass resolution, M/DM 6
Temporal resolution 0,125 s
Mass [kg]10,7





Cooperation:United Kingdom, Russia, Czech Republic, France, Ireland.

Contact persons:A.D. Johnstone (PI): adj@mssl.ucl.ac.uk O.L. Vaisberg olegv@iki.rssi.ru


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