Impact Vaporization and Ionization of Cosmic Dust Particles
作者： Klaus Hornung
关键词: Astrobiology 、 Particle 、 Hypervelocity 、 Atmosphere 、 Cosmic dust 、 Ionization 、 Vaporization 、 Physics 、 Interplanetary spaceflight 、 Computational physics 、 Interplanetary dust cloud
摘要: We report on theoretical efforts to understand the process of vaporization and ion formation upon hypervelocity impact small cosmic dust particles a solid surface. Such collisions occur at surface bodies within planetary system, which do not have an atmosphere as well in various actual upcoming space missions for in-situ measurements interplanetary, interstellar cometary dust. The investigation uses Godunov's method simulate impact. For very high velocitites investigated, impacting particle parts target vaporize some vapor cloud may change partially ionized. Numerical results are communicated 80 kms-1impact slightly porous SiO2 compact SiO2surface. Values amount liquid excavated from given. Ionization rates calculated example investigated estimate is given how this extrapolates highest conceivable velocities system (above 100 km s-1).
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