Actions for Preparation, analysis, and release of simulated interplanetary grains into low earth orbit [electronic resource].

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Preparation, analysis, and release of simulated interplanetary grains into low earth orbit [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1985.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 7 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Astronomical observations which reflect the optical and dynamical properties of interstellar and interplanetary grains are the primary means of identifying the shape, size, and the chemistry of extraterrestrial grain materials and is a major subject of this workshop. Except for recent samplings of extraterrestrial particles in near-Earth orbit and in the stratosphere, observations have been the only method of deducing the properties of extraterrestrial particles. Terrestrial laboratory experiments typically seek not to reproduce astrophysical conditions but to illuminate fundamental dust processes and properties which must be extrapolated to interesting astrophysical conditions. In this report, we discuss the formation and optical characterization of simulated interstellar and interplanetary dust with particular emphasis on studying the properties on irregularly shaped particles. We also discuss efforts to develop the techniques to allow dust experiments to be carried out in low-Earth orbit, thus extending the conditions under which dust experiments may be performed. The objectives of this study are threefold: (1) Elucidate the optical properties, including scattering and absorption, of simulated interstellar grains including SiC, silicates, and carbon grains produced in the laboratory. (2) Develop the capabilities to release grains and volatile materials into the near-Earth environment and study their dynamics and optical properties. (3) Study the interaction of released materials with the near-Earth environment to elucidate grain behavior in astrophysical environments. Interaction of grains with their environment may, for example, lead to grain alignment or coagulation, which results in observable phenomena such as polarization of lighter or a change of the scattering properties of the grains.
Report Numbers
E 1.99:la-ur-85-1979
E 1.99: conf-850287-1
conf-850287-1
la-ur-85-1979
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1985.
"la-ur-85-1979"
" conf-850287-1"
"DE85014133"
Workshop on the inter-relationship among interstellar, circumstellar, and interplanetary grains, Wye, MD, USA, 27 Feb 1985.
Stephens, J.R.; Kunkle, T.D.; Strong, I.B.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 13826500