Physics – Plasma Physics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17..139p&link_type=abstract
Geophysical Research Letters, Volume 17, Issue 2, p. 139-142
Physics
Plasma Physics
5
Space Plasma Physics: Spacecraft Sheaths, Wakes, Charging
Scientific paper
Groundbased and onboard video images of a sunlit Shuttle Orbiter water dump are interpreted as showing that the continuous ~1 mm diameter liquid stream quickly breaks up in near-vacuum to form ice/snow particles of two characteristic sizes. Discrete large droplets (shown from laboratory measurements, to have diameters comparable with that of the initial coherent quasicylinder) are most evident in the close-in photographs, and unresolved submicron ``fog'' from recondensation of overexpanded evaporated water appears to dominate the ground-telescope photographs of the ~21/2 km long optically detectable trail. We estimated the mean diameter of the smaller particles from the spatial distribution of visible radiance using a model of their energy balance, (small) surface roughening as they sublime, and Mie scattering of pre-dawn sunlight. The results are consistent with those from recent space-tank simulations.
Ashley G.
Bagian J. P.
Berk Alexander
Buchli J. F.
Elgin James B.
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