Computer Science – Sound
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...66..487c&link_type=abstract
Icarus (ISSN 0019-1035), vol. 66, June 1986, p. 487-514.
Computer Science
Sound
35
Asteroids, Collisions, Hypervelocity Impact, Planetary Evolution, Fragments, Histograms, Mass Distribution, Shock Waves
Scientific paper
The authors report the results of six impact fragmentation experiments carried out with free-falling macroscopic targets of different compositions and shapes, and with projectile velocities close to 9 km/sec., i.e., significantly higher than the sound velocity in the target materials. The data have been examined by deriving the mass and shape distributions of the fragments, by reconstructing two of the shattered targets in order to study the geometry of the fracture surfaces, and by analyzing the properties of the fine-grained high-velocity ejecta. The fragment mass distributions show clearly that the degree of target fragmentation depends strongly on the impact parameter. While the collisional theory for the origin of families is fully consistent with the experimental results, the elongated shapes of several Apollo-Amor objects are much rarer among the laboratory fragments, and thus appear to require a different explanation.
Capaccioni Fabrizio
Cerroni Pricilla
Coradini Marcello
di Martino Mario
Farinella Paolo
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