Properties and Interactions of Interplanetary Dust

Investigation of the interplanetary dust cloud is characterized by contributions from quite different methods and fields, such as research on zodiacal light, meteors, micrometeoroids, asteroids, and comets. Since the earth's environment and interplanetary space became accessible to space vehicles these interrelations are clearly evident and extremely useful. Space measurements by micrometeoroid detectors, for example, provide individual and eventually detailed information on impact events, which however are limited in number and therefore restricted in statistical significance. On the other hand, zodiacal light measurements involve scattered light from many particles and therefore provide global information about the average values of physical properties and spatial distribution of interplanetary grains. Additional knowledge stems from lunar samples and from dust collections in the atmosphere and in deep sea sediments. All these sources of complementary information must be put together into a synoptical synthesis. This also has to take into account dynamical aspects and the results of laboratory investigations concerning physical properties of small grains. Such considerable effort is not merely an academic exercise for a few specialists interested in the solar dust cloud. Since this same cloud exclusively allows direct in-situ acess to investigate extraterrestrial dust particles over a wide range of sizes and materials, it provides valuable information for realistic treatment of dust phenomena in other remote cosmic regions such as in dense molecular clouds, circumstellar dust shells, and even protostellar or protoplanetary systems.

Inhalt

I. Zodiacal Light and F-Corona: Observations.- Zodiacal Light and Interplanetary Dust (IR).- Photographic Observations of the Inner Zodiacal Light Aboard Saliout.- Ground-Based Observations of Near Ecliptic Zodiacal Light Brightness.- An Isophote Map of the Zodiacal Light in V.- The Change in the Near-Ecliptic Zodiacal Light Brightness with Heliocentric Distance.- Zodiacal Light, Gegenschein and Sky Background.- Recent Rocket Observations of the Ultraviolet Spectrum of the Zodiacal Light.- A Search for Small Scale Structures in the Zodiacal Light.- An Observational Search for the Schuerman Dust Arcs.- IRAS Observations of the Interplanetary Dust Emission (IC).- Balloon Observation of the F-Corona at the 1983 Total Solar Eclipse (IC).- A Balloon Observation of the Thermal Radiation from the Circumsolar Dust Cloud in the 1983 Total Eclipse.- On the Solar Dust Ring(s).- The F-Corona and the Circum-Solar Dust Evidences and Properties (IR) 6.- Interpretation of F-Corona Radial Velocity Field.- Interferometric Observation of the F-Corona Radial Velocities Field Between 3 and 7 R?.- The Motion of Interplanetary Dust Particles.- Doppler Shifts Measurements of the Zodiacal Light at the Pic Midi Observatory.- II. Interplanetary Dust: Space and Ground Studies.- The Interplanetary Micrometeoroid Flux and Lunar Primary and Secondary Microcraters (IR).- Explorer 46 Meteoroid Bumper Experiment: Earth Orbital Debris Interpretation.- On the Earth's Dust Envelope.- Orbits of Interplanetary Dust Particles Inside 1 AU as Observed by Helios.- Calibration of the Galileo/ISPM Dust Detectors with Iron Particles.- The LDEF Interplanetary Dust Experiment.- Measurements of the Elemental and Isotopic Composition of Interplanetary Dust Collected on LDEF.- Prospects for Cosmic Dust Experiments on the Planned Reflight of LDEF.- Acoustic Penetration and Impact Detector for Micrometeoroid and Space Debris Application.- An Empirical Penetration Equation for Thin Metallic Films Used in Capture Cell Techniques.- Some Remarks on the Density of Interplanetary Dust Grains.- A Coronascanner for a Sun Oriented Space Mission.- III. Interplanetary Dust: Laboratory Studies.- Collection of Cosmic Dust: Past and Future (IR).- Complementary Laboratory Measurements of Individual Interplanetary Dust Particles.- Proton Induced X-Ray Emission (PIXE) Analysis of Meteoritic Microsamples.- Physical Properties of Submicronic Carbonaceous Particles Candidate as Cosmic Dust.- A Discover of Iron Spherules with Golden Ni-Fe Core and Silicate Spherules with Golden Ni-Fe Inclusion in Deep-Sea Sediments.- 26Al/l0Be in Deep Sea Spherules as Evidence of Cometary Origin.- Chemical and Isotopic Compositions of Refractory Elements in Deep Sea Spherules.- Cosmic Ray Exposure Age Determinations of Cosmic Spherules from Marine Sediments.- Cosmic Spherules, Asteroid Collisions and the Solar Constant.- Observation of high 3He/4He Ratio in Ocean Sediments - Evidence for Extraterrestrial Material Contamination.- Cometary Dust and the Periodicity of Rainfall Singularities.- IV. Optical Studies of Dust.- Laboratory Investigations and Optical Properties of Grains (IR).- Remote Sensing of the Zodiacal Cloud along Secants to Earth's Orbit (IC).- A Method for Deriving the Mean Volume Scattering Phase Function for Zodiacal Dust.- Microwave and Laser Facilities to Determine Scattering and Colour Signatures Related to the Physical Properties of Dust Particles.- Experimental Results on Scattering by Irregular and Meteoritic Dust Particles Related to Photopolarimetry of Zodiacal Light and Comets.- Laboratory Results on Polarization Properties of Elongated Particles and Comparisons to Dust in the Tail of Comet IKEYA-SEKI (1965 VIII).- Preliminary Results of a Dust Scattering Experiment.- nfluence of Surface Roughness on Scattering Patterns.- Zodiacal Light and the Spatial Density of Interplanetary Grains.- Optical Properties of Rough Grains: A Theoretical Study.- Wavelength Dependence of the Zodiacal Light.- Optical Models of the Three Dimensional Distribution of Interplanetary Dust.- Equilibrium Temperatures of H2O,CO2 and NH3 Ice Grains in the Solar System.- The Optical Properties of Circumstellar and Interstellar Dust in the Mid-IR.- Laboratory Infrared Transmission Measurements of Interplanetary Dust and Implications for Remote Observations of Cosmic Particles.- Plans for Release of Simulated Interplanetary Materials Into Low Earth Orbit.- V. Relations to Comets and Meteoroids.- On the Bimodal Nature of the Particle-Size-Distribution Function of Cometary Dust.- On the Dynamic Behaviour of Dust Striae Observed in Comets West 1976VI, and Mrkos 1957V.- Selection Effects Against Small Comets.- Optical Detection of Large Meteoroids in Space.- Meteoroid Orbits Determined by Southern Hemisphere Radar.- VI. Dust - Plasma Interactions.- Dust - Plasma - Gas Interactions in the Heliosphere (IR).- Interaction of the Cometary Dust with the Solar Wind and Cometary Plasma.- Optical and Photoelectric Properties of Materials of Astrophysical Interest.- Electrostatic Charge of Interplanetary Dust Grains: New Results.- On the Electrical Effects of the Presence of Fluff on the Surface of Cosmic Dust Grains.- Secondary Emission from Interplanetary Dust Grains.- Computer Calculation of Collision Cascades by Energetic Particles Penetrating Dust Grains.- Laboratory Simulation of Chemical Interactions of Accelerated Ions with Dust and Ice Grains.- On Two Mechanisms of X-Ray Generation in Comets.- VII. Dynamics of Interplanetary Dust.- Dynamics and Spatial Distribution of Interplanetary Dust.- The Gravitational Zones of Influence of the Planets Acting on Small Celestial Bodies.- A New Approach to Evaluate Planetary Perturbations on a Cloud of Dust in Low Eccentricity Heliocentric Orbits.- Planetary Perturbations: Effects of the Shape of a Cloud of Dust in Circular Heliocentric Orbits.- Dynamics of Dust Particles in the Solar System.- An Analysis of IRAS' Solar System Dust Bands.- Mass Input into and Output from the Meteoritic Complex.- Lorentz Scattering of Interplanetary Dust Grains.- Possible Distributions of some Orbital Elements of Interstellar Particles in the Solar System.- IR = Invited Review.- IC = Invited Contribution.- Final Discussion.- Summary and Conclusion of the Colloquium.- Index of Autho…