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Table 2
A comparison of the particle sizes and experimental conditions in ice collision studies to date.
Study | Size of particle(s) | Collision method | Surface | Relative collision | Temperature | Pressure | |
(diameter) | properties | velocities (m s-1) | (K) | (mbar) | |||
|
|||||||
Hatzes et al. | 50 mm ice sphere | Pendulum | Smooth, roughened | 0.00015–0.02 | 85–145 | 1.3 × 10-3 − | |
(1988) | and ice block | and frosted | 1.3 × 10-4 | ||||
Higa et al. | 30 mm ice sphere | Free fall | Smooth | 0.01–7 | 113–269 | 10 | |
(1996 | and ice block | ||||||
Higa et al. | 2.8–72 mm | Free fall | Smooth | 0.01–10 | 261 | 1000 | |
(1998) | sphere and | ||||||
ice block | |||||||
Heißelmann | 15 mm | Pistons, | Rough, unfrosted | 0.06–0.22 | 130–180 | Not stated | |
et al. (2010) | spheres | microgravity | but likely to | ||||
be around | |||||||
10-5 | |||||||
Present work | 4.7–10.8 mm | Pistons, | Rough, unfrosted | 0.26–0.51 | 130–160 | 10-5 | |
spheres and | microgravity | ||||||
fragments |
Notes. The particle sizes, collision methods, surface properties, collision velocities, temperature and pressure are all shown for comparison.
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