Study of chondrule forming environment by reproduction experiment using levitation method

Abstract

In order to constrain the formation conditions of chondrules, a number of reproduction experiments have been performed. A gas jet levitation method was employed in Nagashima et al. (2006). In this study, we performed experiments to reproduce the textures of radial pyroxene chondrules using the gas jet levitation furnace used in Nagashima et al. (2006). The textures similar to natural radial pyroxene chondrules were reproduced at the cooling rates of about 10⁵-10⁶K/hr and crystal growth rate of 0.1-0.01mm/sec.   These experimental data insist chondrule formation event is about 10-100sec and would lead to a discussion on the chondrule formation.