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Constraining the origin of impact craters on al foils from the stardust interstellar dust collector
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bridges, John Floss, Christine Sandford, Scott A. Stroud, Rhonda M. Allen, Carlton Burghammer, Manfred Zolensky, Michael E. Bastien, Ron S. Achilles, Cheri Burchell, Mark Brenker, Frank E. Bassim, Nabil Cloetens, Peter Brownlee, Donald E. Frank, David Bajt, Sasa Butterworth, Anna L. Bechtel, H. A. Changela, Hitesh Ansari, Asna Flynn, George Borg, Janet Davis, Andrew M. Doll, Ryan |
| Copyright Year | 2012 |
| Description | Preliminary examination (PE) of the aerogel tiles and Al foils from the Stardust Interstellar Dust Collector has revealed multiple impact features. Some are most likely due to primary impacts of interstellar dust (ISD) grains, and others are associated with secondary impacts of spacecraft debris, and possibly primary impacts of interplanetary dust particles (IDPs) [1, 2]. The current focus of the PE effort is on constraining the origin of the individual impact features so that definitive results from the first direct laboratory analysis of contemporary ISD can be reported. Because crater morphology depends on impacting particle shape and composition, in addition to the angle and direction of impact, unique particle trajectories are not easily determined. However, elemental analysis of the crater residues can distinguish real cosmic dust from the spacecraft debris, due to the low cosmic abundance of many of the elements in the spacecraft materials. We present here results from the elemental analysis of 24 craters and discuss the possible origins of 4 that are identified as candidate ISD impacts |
| File Size | 1085035 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120002764 |
| Archival Resource Key | ark:/13960/t2w42rb5j |
| Language | English |
| Publisher Date | 2012-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Aerogels Residues Chemical Analysis Craters Tiles Stardust Mission Dust Collectors Debris Particle Trajectories Interplanetary Dust Interstellar Matter Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
