Focused ion beam recovery of hypervelocity impact residue in experimental craters on metallic foils
Corresponding Author
G. A. Graham
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
*[email protected]Search for more papers by this authorN. Teslich
Chemistry and Materials Science, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorZ. R. Dai
Chemistry and Materials Science, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorJ. P. Bradley
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorA. T. Kearsley
Department of Mineralogy, The Natural History Museum, London, SW7 5BD, UK
Search for more papers by this authorF. Hörz
Astromaterials Research Office, NASA Johnson Space Center, Houston, Texas 77058, USA
Search for more papers by this authorCorresponding Author
G. A. Graham
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
*[email protected]Search for more papers by this authorN. Teslich
Chemistry and Materials Science, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorZ. R. Dai
Chemistry and Materials Science, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorJ. P. Bradley
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
Search for more papers by this authorA. T. Kearsley
Department of Mineralogy, The Natural History Museum, London, SW7 5BD, UK
Search for more papers by this authorF. Hörz
Astromaterials Research Office, NASA Johnson Space Center, Houston, Texas 77058, USA
Search for more papers by this authorAbstract
Abstract— The Stardust sample return capsule returned to Earth in January 2006 with primitive debris collected from comet 81P/Wild-2 during the flyby encounter in 2004. In addition to the cometary particles embedded in low-density silica aerogel, there are microcraters preserved in the aluminum foils (1100 series; 100 μm thick) that are wrapped around the sample tray assembly. Soda lime spheres (˜49 μm in diameter) have been accelerated with a light gas gun into flight-grade aluminum foils at 6.35 km s−1 to simulate the capture of cometary debris. The experimental craters have been analyzed using scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDX) to locate and characterize remants of the projectile material remaining within the craters. In addition, ion beam-induced secondary electron imaging has proven particularly useful in identifying areas within the craters that contain residue material. Finally, high-precision focused ion beam (FIB) milling has been used to isolate and then extract an individual melt residue droplet from the interior wall of an impact. This has enabled further detailed elemental characterization that is free from the background contamination of the aluminum foil substrate. The ability to recover “pure” melt residues using FIB will significantly extend the interpretations of the residue chemistry preserved in the aluminum foils returned by Stardust.
REFERENCES
- Bernhard R. P., See T. H., and Hörz F. 1993. Projectile compositions and modal frequencies on the “Chemistry of micrometeoroids” LDEF experiment. In LDEF, 69 months in space: First post-retrieval symposium, edited by A. S. Levine Washington, D.C.: NASA, Office of Management, Scientific and Technical Information Program. pp. 551–573.
- Bradley J., Dai Z. R., Erni R., Browning N., Graham G., Weber P., Smith J., Hutcheon I., Ishii H., Bajt S., Floss C., Stadermann F., and Sandford S. 2005. An astronomical 2175 Å feature in interplanetary dust particles. Science 307: 244–247.
- Bradley J. P., Keller L. P., Snow T. P., Hanner M. S., Flynn G. J., Gezo J. C., Clemett S. J., Brownlee D. E., and Bowey J. E. 1999. An infrared spectral match between GEMS and interstellar grains. Science 285: 1716–1718.
- Bradley J. P. and Brownlee D. E. 1986. Cometary particles: Thin sectioning and electron beam analysis. Science 231: 1542–1544.
- Bradley J., Carey W., and Walker R. M. 1986. Solar max impact particles: Perturbation of captured material. Proceedings, 17th Lunar and Planetary Science Conference. pp. 81–82.
- Brownlee D. E. 2003. Comets. In Meteorites, comets, and planets: Treatise on geochemistry, vol. 1, edited by A. M. Davis Amsterdam: Elsevier. pp. 663–688.
- Brownlee D. E., Hörz F., Newburn R. L., Zolensky M., Duxbury T. C., Sandford S., Sekanina Z., Tsou P., Hanner M. S., Clark B. C., Green S. F., and Kissel J. 2004. Surface of a young Jupiter family comet 81P/Wild-2: View from the Stardust spacecraft. Science 304: 1764–1769.
- Brownlee D. E., Tsou P., Anderson J. D., Hanner M. S., Newburn R. L., Sekanina Z., Clark B. C., Hörz F., Zolensky M. E., Kissel J., McDonnell J. A. M., Sandford S. A., and Tuzzolino A. J. 2003. Stardust: Comet and interstellar dust sample return mission. Journal of Geophysical Research, doi:10.1029/2003JE002087.
- Brownlee D. E., Joswiak D., Bradley J., and Hörz F. 1993. Interplanetary meteoroid debris in LDEF metal craters. In LDEF, 69 months in space: First post-retrieval symposium, edited by A. S. Levine Washington, D.C.: NASA, Office of Management, Scientific and Technical Information Program. pp. 577–584.
- Bunch T. E., di Brozolo Radicati F., Fleming R. H., Harris D. W., Brownlee D., and Reilly T. W. 1991. LDEF impact craters formed by carbon-rich impactors: A preliminary report. In LDEF-69 months in Space First Post-Retrieval Symposium, NASA CP-3134 Part 1. pp. 549–564.
- Floss C., Stadermann F. J., Bradley J., Dai Z. R., Bajt S., and Graham G. 2004. Carbon and nitrogen isotopic anomalies in an anhydrous interplanetary dust particle. Science 303: 1355–1358.
- Graham G. A., Grant P. G., Chater R. J., Westphal A. J., Kearsley A. T., Snead C., Dominguez G., Butterworth A. L., McPhail D. S., Bench G., and Bradley J. P. 2004. Investigation of ion beam techniques for the analysis and exposure of particles encapsulated by silica aeogel: Applicability for Stardust. Meteoritics & Planetary Science 39: 1461–1473.
- Graham G. A., Kearsley A. T., Grady M. M., Wright I. P., and McDonnell J. A. M. 2000. The collection of micrometeoroid remnants from low Earth orbit. Advances in Space Research 25: 303–307.
-
Hanner M. S.
2003. The mineralogy of cometary dust. In Astromineralogy: Lecture notes in physics 609, edited by
T. H. Henning Berlin: Springer. pp. 171–188.
10.1007/3-540-45840-9_4 Google Scholar
- Ishii H. A., Graham G. A., Kearsley A. T., Grant P. G., Snead C. J., and Bradley J. P. 2005a. Ultrasonic micro-blades for the rapid extraction of impact tracks from aerogel (abstract #1387). 36th Lunar and Planetary Science Conference. CD-ROM.
- Ishii H. A., Brennan S., Luening K., Pianetta P., Bradley J. P., Snead C. J., and Westphal A. J. 2005b. Hard X-ray spectro-microscopy techniques at SSRL for astromaterials analysis (abstract #1393). 36th Lunar and Planetary Science Conference. CD-ROM.
- Kearsley A. T., Burchell M. J., Hörz F., Cole M., and Schwandt C. S. 2006. Laboratory simulation of impacts on metallic foils of the Stardust spacecraft: Calibration of dust particle size from comet Wild2. Meteoritics & Planetary Science 41. This issue.
- Kearsley A. T., Drolshagen G., McDonnell J. A. M., Mandeville J.-C., and Moussi A. 2005. Impacts on Hubble Space Telescope solar arrays: Discrimination between natural and man-made particles. Advances in Space Research 35: 1254–1262.
- Kissel J., Brownlee D. E., Büchler K., Clark B. C., Fechtig H., Grün E., Hornung K., Igenbergs E. B., Jessberger E. K., Krueger F. R., Kuczera H., McDonnell J. A. M., Morfill G. M., Rahe J., Schwehm G. H., Sekanina Z., Utterback N G., Völk H. J., and Zook H. A. 1986. Composition of comet Halley dust particles from Giotto observations. Nature 321: 336–337.
- Kissel J., Krueger F. R., Silén J., and Clark B. C. 2004. The cometary and interstellar dust analyzer at comet 81P/Wild 2. Science 304: 1774–1776.
- Leroux H., Borg J., Troadec D., Djouadi Z., and Hörz F. 2006. Microstructural study of micron-size craters simulating Stardust impacts in aluminum 1100 targets. Meteoritics & Planetary Science 41. This issue.
- Phaneuf M. W. 2004. FIB for material science applications: A review. In Introduction to focused ion beams: Instrumentation, theory, techniques and practice, edited by L. A. Giannuzzi and F. A. Stevie New York: Springer. pp. 143–172.
- Teetsov A. and Bradley J. 1986. Micromanipulation of extraterrestrial particles. Proceedings, 17th Lunar and Planetary Science Conference. pp. 883–884.
- Tsou P., Brownlee D. E., Sandford S. A., Hörz F., and Zolensky M. E. 2003. Wild 2 and interstellar sample collection and Earth return. Journal of Geophysical Research, doi:10.1029/2003JE002109.
- Tuzzolino A. J., Economou T. E., Clark B. C., Tsou P., Brownlee D. E., Green S. F., McDonnell J. A. M., McBride N., and Colwell M. T. S. H. 2004. Dust measurements in the coma of comet 81P/Wild 2 by the dust flux monitor instrument. Science 304: 1776–1780.
- Stephan T., Leitner J., and Hörz F. 2005. TOF-SIMS analysis of residues from Allende projectiles shot onto aluminum foil: A Stardust dress rehearsal (abstract #4034). Workshop on Dust in Planetary Systems. CD-ROM.
- Westphal A. J., Snead C., Butterworth A., Graham G. A., Bradley J. P., Bajt S., Grant P. G., Bench G., Brennan S., and Pianetta P. 2004. Aerogel keystones: Extraction of complete hypervelocity impact events from aerogel collectors. Meteoritics & Planetary Science 39: 1375–1386.
- Zolensky M. E., Pieters C., Clark B., and Papike J. J. 2000. Small is beautiful: The analysis of nanogram-sized astromaterials. Meteoritics & Planetary Science 35: 9–29.
