T. Mieno

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In order to investigate impact production of carbonaceous products by asteroids on Titan and other satellites and planets, simulation experiments were carried out using a 2-stage light gas gun. A small polycarbonate or metal bullet with about 6.5 km/s was injected into a pressurized target chamber filled with 1 atm of nitrogen gas, to collide with a ice +(More)
SF<inf>6</inf> magnetized plasma column, around which F<sup>&#x2212;</sup> ions are accumulated via radial diffusion, is generated by a dc discharge in a metal chamber. The Langmuir probe method is used to diagnose the plasma, and the density of the negative ions is evaluated utilizing the modified Bohm criterion. Parameter dependences of negative-ion(More)
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