Abstract A micro-gravity experiment to study the growth of dust particles has been proposed to be flown on one of the Columbus precursor flights. The micro-gravity environment will allow for low collision velocities (of order of mm s−1) of the dust grains and for a large Knudsen number of the embedding gas; conditions expected in the early solar nebula. The outcome of the experiment will yield estimates of the sticking efficiency and the critical velocity for agglomeration. The values of these two parameters will provide substantial improvements in the constraints for models of the formation of planetesimals. In particular the questions related to growth rate and mode of the aggregation process will be answered. The range of material type, collision velocities, properties of the environment in which growth takes place, and other factors permit a natural extension of this experiment to take advantage of the capabilities of the space station Columbus. Other astrophysical applications, such as processes in Saturnian rings, with somewhat different regimes could also be investigated.


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    Title :

    Codag — dust agglomeration experiment in micro-gravity


    Contributors:
    Keller, H.U. (author) / Blum, J. (author) / Donn, B. (author) / El Goresy, A. (author) / Fechtig, H. (author) / Feuerbacher, B.P. (author) / Grün, E. (author) / Ip, W.-H. (author) / Kochan, H. (author) / Mann, I. (author)

    Published in:

    Publication date :

    1993-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    CODAG - Dust Agglomeration Experiment in Micro-Gravity

    Keller, H.U. | Online Contents | 1993


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    CODAG-1: Development of a Sounding Rocket Module to Study Cosmic Dust Agglomeration

    Huijser, R. / Scholten, J. R. M. / Schelling, R. et al. | British Library Online Contents | 1997


    First Results from the Cosmic Dust Aggregation Experiment CODAG

    Blum, J. / Wurm, G. / Poppe, T. et al. | British Library Conference Proceedings | 2002


    CODAG sounding rocket experiment

    Emerald Group Publishing | 1999