| Autor: |
Keith F. Ratcliff, Nebil Y. Misconi, Stephen J. Paddack |
| Rok vydání: |
1980 |
| Zdroj: |
Symposium - International Astronomical Union. 90:391-394 |
| ISSN: |
0074-1809 |
| DOI: |
10.1017/s0074180900067127 |
| Popis: |
Irregular interplanetary dust particles may acquire a considerable spin rate due to two non-statistical dynamical mechanisms induced by solar radiation. These arise from variations in surface albedo as discussed by Radzievskii (1954) and from irregularities in surface geometry as discussed by Paddack (1969). We report on an experiment which will lead to an evaluation in space of the effectiveness of these two spin mechanisms. We utilize the technique of optical levitation in an argon laser beam to provide a stable trap for particles (10-60 microns in diameter). The spin rate and direction of the spin axis are measured in a straightforward manner. The objective is to design an optical trap for dielectric particles in vacuum which can be used to study these rotation mechanisms in the gravity-free environment of a Spacelab experiment. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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