NASA NTRS · 19880047903
Solidification under microgravity conditions - Dendritic growth
Abstract
The experimental approach and apparatus of a zero-gravity active crystal growth experiment to test dendritic growth theory at low supercoolings are discussed. The experiment consists of 20 experimental cycles. Estimates have been made as to how low gravitational accelerations would have to be reduced to observe convection-free dendritic growth at supercoolings from 0.01-1.0 K. The experiment requires temperature control of + or - 2 mK and photographic resolution of a few microns with a depth of field of + or - 6 mm. The thermostatic bath and temperature control system, photographic system, growth chamber, and dendrite detection system are described in detail.
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Glicksman, M. E., Hahn, R. C., Lograsso, T. A., Rubinstein, E. R., Winsa, E.. 1987-01-01. Solidification under microgravity conditions - Dendritic growth. https://ntrs.nasa.gov/citations/19880047903
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