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Determination of Particle Densities by Penetration Studies

Published online by Cambridge University Press:  14 August 2015

N. Pailer  and
E. Grün
N. Pailer
Affiliation:
Max-Planck-Institut für Kernphysik, Postfach 10 39 80, 6900 Heidelberg − 1 (FRG)
E. Grün
Affiliation:
Max-Planck-Institut für Kernphysik, Postfach 10 39 80, 6900 Heidelberg − 1 (FRG)

Extract

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Thin films are used in micrometeoroid experiments to shield the sensors from external noise sources. Because of the spin of the Helios spacecraft the ecliptic sensor is exposed to the Sun. Therefore a 3000 Å parylene film coated on one side with 750 Å aluminium protects the experiment against UV-radiation and solar wind particles. The south sensor is shielded from solar emissions by the spacecraft rim and therefore has an open aperture.

Type
IV: The Interplanetary Dust Complex 2. Physical Properties
Information
Symposium - International Astronomical Union , Volume 90: Solid Particles in the Solar System , 1980 , pp. 365 - 370
Copyright
Copyright © Reidel 1980 

References

Dietzel, H., Eichhorn, G., Fechtig, H., Grün, E., Hoffmann, H.-J., and Kissel, J.: 1973, J. Phys. E. Sci. Instrum. 6, p. 209.CrossRefGoogle Scholar
Grün, E., Pailer, N., Fechtig, H., and Kissel, J.: 1979, Planetary Space Sci. (submitted).Google Scholar
Pailer, N., and Grün, E.: 1979, Planetary Space Sci. (submitted).Google Scholar