Physics – Condensed Matter
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..429..957n&link_type=abstract
The tenth American Physical Society topical conference on shock compression of condensed matter. AIP Conference Proceedings, Vol
Physics
Condensed Matter
Impacts, Cratering, High-Pressure And Shock Wave Effects In Solids And Liquids
Scientific paper
Impacts of meteoroids on airless cosmic bodies (asteroids, comets, Moon) result not only in cratering and fragmentation of a target, but cause a formation of radiating vapor plumes. Though the duration of the flash is rather short and the coefficient of the kinetic energy conversion into the radiation impulse is rather small (in comparison to the impacts onto the planets having atmospheres), it may be sufficient for detection of such impacts. Radiation efficiency of the impact is determined by many factors: mechanical and chemical composition of the target and projectile, optical properties of the eject material, impact parameters (velocity, trajectory inclination, event scale, etc.). An estimate of the light impulse created by a 1m-in-radius silica body impacting the lunar surface with the velocity of 50km/s has been made by Melosh et al.(1). In view of some impending experimental work (2) it appeared important to review and refine the estimates of luminous efficiencies and other characteristics of impact originated light flashes, e.g., shape, duration, spectra for various velocities, sizes, compositions, etc.
Artemieva Natalia A.
Ivanov Boris A.
Kosarev I. B.
Nemtchinov Ivan V.
Shuvalov Valery
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