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The Cassini Cosmic Dust Analyzer

  • The Cassini-Huygens Cosmic Dust Analyzer (CDA) is intended to provide direct observations of dust grains with masses between 10(-19) and 10(-9) kg in interplanetary space and in the jovian and saturnian systems, to investigate their physical, chemical and dynamical properties as functions of the distances to the Sun, to Jupiter and to Saturn and its satellites and rings, to study their interaction with the saturnian rings, satellites and magnetosphere. Chemical composition of interplanetary meteoroids will be compared with asteroidal and cometary dust, as well as with Saturn dust, ejecta from rings and satellites. Ring and satellites phenomena which might be effects of meteoroid impacts will be compared with the interplanetary dust environment. Electrical charges of particulate matter in the magnetosphere and its consequences will be studied, e.g. the effects of the ambient plasma and the magnetic held on the trajectories of dust particles as well as fragmentation of particles due to electrostatic disruption. The investigation will beThe Cassini-Huygens Cosmic Dust Analyzer (CDA) is intended to provide direct observations of dust grains with masses between 10(-19) and 10(-9) kg in interplanetary space and in the jovian and saturnian systems, to investigate their physical, chemical and dynamical properties as functions of the distances to the Sun, to Jupiter and to Saturn and its satellites and rings, to study their interaction with the saturnian rings, satellites and magnetosphere. Chemical composition of interplanetary meteoroids will be compared with asteroidal and cometary dust, as well as with Saturn dust, ejecta from rings and satellites. Ring and satellites phenomena which might be effects of meteoroid impacts will be compared with the interplanetary dust environment. Electrical charges of particulate matter in the magnetosphere and its consequences will be studied, e.g. the effects of the ambient plasma and the magnetic held on the trajectories of dust particles as well as fragmentation of particles due to electrostatic disruption. The investigation will be performed with an instrument that measures the mass, composition, electric charge, speed, and flight direction of individual dust particles. It is a highly reliable and versatile instrument with a mass sensitivity 106 times higher than that of the Pioneer 10 and I I dust detectors which measured dust in the saturnian system. The Cosmic Dust Analyzer has significant inheritance from former space instrumentation developed for the VEGA, Giotto, Galileo, and Ulysses missions. It will reliably measure impacts from as low as I impact per month up to 104 impacts per second. The instrument weighs 17 kg and consumes 12 W, the integrated time-of-flight mass spectrometer has a mass resolution of up to 50. The nominal data transmission rate is 524 bits/s and varies between 50 and 4192 bpsshow moreshow less

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Author:Ralf Srama, Thomas J. Ahrens, Nicolas Altobelli, S. Auer, J. G. Bradley, M. Burton, V. V. Dikarev, T. Economou, Hugo Fechtig, M. Görlich, M. Grande, Amara Graps, Eberhard Grün, Ove Havnes, Stefan Helfert, Mihaly Horanyi, E. Igenbergs, Elmar K. Jessberger, T. V. Johnson, Sascha Kempf, Alexander v. Krivov, Harald Krüger, Anna Mocker-Ahlreep, Georg Moragas-Klostermeyer, Philippe Lamy, Markus Landgraf, Dietmar Linkert, G. Linkert, F. Lura, J. A. M. McDonnell, Dirk Moehlmann, Gregory E. Morfill, M. Muller, M. Roy, G. Schafer, G. Schlotzhauer, Gerhard H. Schwehm, Frank Spahn, M. Stübig, Jiri Svestka, V Tschernjawski
ISSN:0038-6308
Document Type:Article
Language:English
Year of first Publication:2004
Year of Completion:2004
Release Date:2017/03/24
Source:Space Science Reviews. - ISSN 0038-6308. - 114 (2004), 1-4, S. 465 - 518
PACS Classification:80.00.00 INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY / 87.00.00 Biological and medical physics / 87.50.-a Effects of electromagnetic and acoustic fields on biological systems
Peer Review:Referiert