date: 2013 March 6 (Wed) 15:00-16:00
room: CPS Conference Room
speaker: Shogo Tachibana (Hokkaido University)
organizer: Hiroshi Kimura
title: Vapor growth of Mg-silicates under protoplanetary disk conditions: Experimental study
abstract: Condensation from vapor is a fundamental process responsible for dust formation in protoplanetary disks. The kinetic aspect of dust formation should be quantitatively understood to evaluate the size, the number density, and the chemical variety of dust particles. Condensation experiments of Mg-silicates, dominant dust species, were performed in previous studies, but it has not yet been fully possible to make quantitative discussion on kinetics because there are still some experimental difficulties. I will talk about our recent improvements of the low-pressure infrared furnace and experimental techniques for condensation experiments of magnesium silicates under protoplanetary disk conditions. I will also show new results on evaporation experiments of forsterite under controlled H2O/H2 conditions.
keywords: evaporation, condensation, forsterite, dust, protoplanetary disk