Low energy neutral atom imaging on the Moon with the SARA instrument aboard Chandrayaan-1 mission

Bhardwaj, Anil ; Barabash, Stas ; Futaana, Yoshifumi ; Kazama, Yoichi ; Asamura, Kazushi ; McCann, David ; Sridharan, Rajagopal ; Holmstrom, Mats ; Wurz, Peter ; Lundin, Rickard (2005) Low energy neutral atom imaging on the Moon with the SARA instrument aboard Chandrayaan-1 mission Journal of Earth System Science, 114 (6). pp. 749-760. ISSN 0253-4126

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Official URL: http://www.ias.ac.in/jess/dec2005/ilc-21.pdf

Related URL: http://dx.doi.org/10.1007/BF02715960


This paper reports on the Sub-keV Atom Reflecting Analyzer (SARA) experiment that will be flown on the first Indian lunar mission Chandrayaan-1. The SARA is a low energy neutral atom (LENA) imaging mass spectrometer, which will perform remote sensing of the lunar surface via detection of neutral atoms in the energy range from 10 eV to 3 keV from a 100km polar orbit. In this report we present the basic design of the SARA experiment and discuss various scientific issues that will be addressed. The SARA instrument consists of three major subsystems: a LENA sensor (CENA), a solar wind monitor (SWIM), and a digital processing unit (DPU). SARA will be used to image the solar wind-surface interaction to study primarily the surface composition and surface magnetic anomalies and associated mini-magnetospheres. Studies of lunar exosphere sources and space weathering on the Moon will also be attempted. SARA is the first LENA imaging mass spectrometer of its kind to be flown on a space mission. A replica of SARA is planned to fly to Mercury onboard the BepiColombo mission.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Moon; Moon-solar Wind Interaction; Lunar Elemental Composition; Lunar Magnetic Anomalies; Energetic Neutral Atom (ENA); Lunar Mission
ID Code:2468
Deposited On:08 Oct 2010 07:21
Last Modified:16 May 2016 13:27

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