Journal
CURRENT SCIENCE
Volume 109, Issue 6, Pages 1106-1113Publisher
INDIAN ACAD SCIENCES
DOI: 10.18520/v109/i6/1106-1113
Keywords
Exosphere; Mars Orbiter; mass spectrometer; thermal escape
Categories
Funding
- MOM project
- UHV Division of RRCAT, Indore
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The Mars Exospheric Neutral Composition Analyser (MENCA) aboard the Indian Mars Orbiter Mission (MOM) is a quadrupole mass spectrometer-based experiment. Making use of the highly elliptical and low inclination (similar to 150 degrees) orbit of MOM, MENCA will conduct in situ measurements of the composition and radial distribution of the Martian neutral exosphere in the 1-300 amu mass range in the equatorial and low latitudes of Mars. The functionality of MENCA has been tested during the Earth-bound and heliocentric phases of MOM before its operation in the Martian orbit. This article describes the scientific objectives, instrument details, design and development, test and evaluation, and calibration of the MENCA instrument.
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