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In situ dust measurements in the inner Saturnian system

Srama, R. and Ahrens, T. J. (2006) In situ dust measurements in the inner Saturnian system. Planetary and Space Science, 54 (9-10). pp. 967-987. ISSN 0032-0633.

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In July 2004 the Cassini–Huygens mission reached the Saturnian system and started its orbital tour. A total of 75 orbits will be carried out during the primary mission until August 2008. In these four years Cassini crosses the ring plane 150 times and spends approx. 400 h within Titan's orbit. The Cosmic Dust Analyser (CDA) onboard Cassini characterises the dust environment with its extended E ring and embedded moons. Here, we focus on the CDA results of the first year and we present the Dust Analyser (DA) data within Titan's orbit. This paper does investigate High Rate Detector data and dust composition measurements. The authors focus on the analysis of impact rates, which were strongly variable primarily due to changes of the spacecraft pointing. An overview is given about the ring plane crossings and the DA counter measurements. The DA dust impact rates are compared with the DA boresight configuration around all ring plane crossings between June 2004 and July 2005. Dust impacts were registered at altitudes as high as 100 000 km above the ring plane at distances from Saturn between 4 and 10 Saturn radii. In those regions the dust density of particles bigger than 0.5 µm can reach values of 0.001 m^(-3).

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Additional Information:© 2006 Published by Elsevier Ltd. Accepted 4 May 2006, Available online 26 July 2006. This work has been supported by the Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) under Grant 50 OH 0304.
Funding AgencyGrant Number
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)50 OH 0304
Subject Keywords:Cassini; dust; CDA; E-ring; water ice
Issue or Number:9-10
Record Number:CaltechAUTHORS:20141022-082051842
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Official Citation:R. Srama, S. Kempf, G. Moragas-Klostermeyer, S. Helfert, T.J. Ahrens, N. Altobelli, S. Auer, U. Beckmann, J.G. Bradley, M. Burton, V.V. Dikarev, T. Economou, H. Fechtig, S.F. Green, M. Grande, O. Havnes, J.K. Hillier, M. Horanyi, E. Igenbergs, E.K. Jessberger, T.V. Johnson, H. Krüger, G. Matt, N. McBride, A. Mocker, P. Lamy, D. Linkert, G. Linkert, F. Lura, J.A.M. McDonnell, D. Möhlmann, G.E. Morfill, F. Postberg, M. Roy, G.H. Schwehm, F. Spahn, J. Svestka, V. Tschernjawski, A.J. Tuzzolino, R. Wäsch, E. Grün, In situ dust measurements in the inner Saturnian system, Planetary and Space Science, Volume 54, Issues 9–10, August 2006, Pages 967-987, ISSN 0032-0633, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50660
Deposited By: Tony Diaz
Deposited On:22 Oct 2014 16:40
Last Modified:03 Oct 2019 07:25

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