9:30 AM - 9:45 AM
[PPS10-09] 4D in situ observation of formation process of chondrules
Keywords:chondrules, in situ observation heating experiment, 4D-CT
Their shape clearly indicates that they were solidified from molten droplets. However, the formation process of them, such as heat source and thermal history, precursor material, formation region in the early solar nebula, are still unknown.
In previous studies, several heating experiments for the reproduction of their characteristic textures were conducted. However, complete reproduction of their textures has not been succeeded yet. One of the difficulties is that growth process of crystals inside the chondrules is difficult to observe. Silicate materials melted above 2000K emits strong radiation. In this situation, phenomenon occurred inside a few mm sample is difficult to observe with high spatial resolution by visible light.
In this study, we developed a new devise for in situ 4D observation, 4D means 3D + time elapse, of crystallization process of chondrules using synchrotron radiation computed tomography, and conducted heating experiments of analog materials. We show preliminary result of the experiments, and discuss the problems of heating experiments of previous studies based on the results obtained by our new setup. We will also show future plan for our investigation, and also show the possible heating experiment for the chondrule formation using the system.