A Zero-Gravity Instrument to Study Low Velocity Collisions of Fragile Particles at Low Temperatures
| Autor: | G. van der Wolk, Jürgen Blum, G. Chaparro, R. W. Dawson, Kathrin Gebauer, M. Hutcheon, G. Drinkwater, D. Heißelmann, B. Stoll, E. de Kuyper, P. C. van der Tuijn, Harold Linnartz, F. J. Molster, Helen J. Fraser, D. M. Salter, A. G. Borst, P. Reißaus |
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| Přispěvatelé: | Astronomy, Kapteyn Astronomical Institute |
| Rok vydání: | 2009 |
| Předmět: |
vacuum apparatus
IMPACTS Gravity (chemistry) Materials science Vacuum T-TAURI STARS ice FOS: Physical sciences DUST PHYSICS Motion Physics - Space Physics Planet Thermal Instrumentation QC high-speed techniques Range (particle radiation) DISKS Weightlessness zero gravity experiments Equipment Design Mechanics Space Physics (physics.space-ph) Cold Temperature cryogenics Computer-Aided Design GROWTH Particle BODIES Vacuum chamber Zero gravity Particle Accelerators Copper Cooling down |
| Zdroj: | Review of Scientific Instruments, 80(7):074501. AMER INST PHYSICS |
| ISSN: | 0034-6748 |
| DOI: | 10.48550/arxiv.0906.3977 |
| Popis: | We discuss the design, operation, and performance of a vacuum setup constructed for use in zero (or reduced) gravity conditions to initiate collisions of fragile millimeter-sized particles at low velocity and temperature. Such particles are typically found in many astronomical settings and in regions of planet formation. The instrument has participated in four parabolic flight campaigns to date, operating for a total of 2.4 hours in reduced gravity conditions and successfully recording over 300 separate collisions of loosely packed dust aggregates and ice samples. The imparted particle velocities achieved range from 0.03-0.28 m s^-1 and a high-speed, high-resolution camera captures the events at 107 frames per second from two viewing angles separated by either 48.8 or 60.0 degrees. The particles can be stored inside the experiment vacuum chamber at temperatures of 80-300 K for several uninterrupted hours using a built-in thermal accumulation system. The copper structure allows cooling down to cryogenic temperatures before commencement of the experiments. Throughout the parabolic flight campaigns, add-ons and modifications have been made, illustrating the instrument flexibility in the study of small particle collisions. Comment: D. M. Salter, D. Hei{\ss}elmann, G. Chaparro, G. van der Wolk, P. Rei{\ss}aus, A. G. Borst, R. W. Dawson, E. de Kuyper, G. Drinkwater, K. Gebauer, M. Hutcheon, H. Linnartz, F. J. Molster, B. Stoll, P. C. van der Tuijn, H. J. Fraser, and J. Blum |
| Databáze: | OpenAIRE |
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