An experimental study on the chondrule formation under the canonical nebula pressures in the quasi-closed system

Abstract

The canonical solar nebula pressure has been estimated to be 0.01-100 Pa.  The chondrules have been reproduced under the atmospheric pressure.  The textures of reproduced chondrules are similar to those under the atmospheric pressure rather than under the nebula condition (~1 Pa).  Chondrules might have formed under the atmospheric condition.  However, partial pressures relating volatile species (Fe, Si, Mn) have not been into consideration.  Using the newly developed furnace under the quasi-closed system, chondrules may be reproduced under the canonical nebula pressures.  The preliminary experimental results may show the decrease of the iron content.