The cosmic dust aggregation experiment CODAG

被引：13

作者：

Blum, J ^{[1
]}

Wurm, G

Poppe, T

Kempf, S

Fiethe, B

Giel, M

Offterdinger, P

Neuhaus, D

Rott, M

Giovane, F

Gustafson, B

机构：

[1] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

[2] Univ Jena, Inst Astrophys, D-07745 Jena, Germany

[3] Univ Jena Observ, D-07745 Jena, Germany

[4] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

[5] Univ Bremen, ZARM, Bremen, Germany

[6] DLR, Inst Space Simulat, Cologne, Germany

[7] Tech Univ Munich, Ctr Space Technol, D-8000 Munich, Germany

[8] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1999年 / 10卷 / 10期

关键词：

preplanetary dust aggregation; Brownian motion; stereo microscopy; light scattering; production of dust clouds; microgravity experiment;

D O I：

10.1088/0957-0233/10/10/302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the simulation of the first stage of preplanetary dust aggregation, we developed the cosmic dust aggregation experiment (CODAG). With CODAG, we intend to study the aggregational behaviour of a cloud of micron-sized dust particles due to Brownian motion of the grains. For a realistic simulation of the processes in the young solar system, the dust grains have to be dispersed in a rarefied gas so that mutual collisions are ballistic. Fast sedimentation of the grains in the Earth's gravitational field leads to unrealistic collision velocities and to a rapid loss of particles to the container walls. Therefore, CODAG was designed to work in a microgravity environment. In this paper, we present an overview of the experimental design of CODAG which was recently flown in a Get Away Special container during the STS-95 mission.

引用

页码：836 / 844

页数：9

共 6 条

[1] The Brownian motion of dust particles in the solar nebula: An experimental approach to the problem of pre-planetary dust aggregation [J].