SOFT X-RAY IRRADIATION of SILICATES: IMPLICATIONS for DUST EVOLUTION in PROTOPLANETARY DISKS

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题名:	SOFT X-RAY IRRADIATION of SILICATES: IMPLICATIONS for DUST EVOLUTION in PROTOPLANETARY DISKS
作者:	黃朝暉;Ciaravella, A.;Cecchi-Pestellini, C.;Chen, Y.-J.;Muñoz Caro, G. M.;Huang, C.-H.;Jiménez-Escobar, A.;Venezia, A. M.
贡献者:	理學院物理學系
关键词:	ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;COSMIC DUST;EVOLUTION;IRRADIATION;KEV RANGE;MAGNESIUM COMPOUNDS;methods: laboratory: solid state;MICROWAVE RADIATION;MONOCHROMATORS;PHOTONS;Planet formation;PROCESSING;PROTOPLANETS;SILICATES;SIMULATION;SOFT X RADIATION;Soft x-rays;STOICHIOMETRY;SYNCHROTRON RADIATION;Synthesis (chemistry);X-rays: ISM
日期:	2016-09-01
上传时间:	2026-04-23 14:25:44 (UTC+8)
出版者:	IOP Publishing Ltd.;United States: The American Astronomical Society
摘要:	摘要： ABSTRACT The processing of energetic photons on bare silicate grains was simulated experimentally on silicate films submitted to soft X-rays of energies up to 1.25 keV. The silicate material was prepared by means of a microwave assisted sol-gel technique. Its chemical composition reflects the Mg2SiO4 stoichiometry with residual impurities due to the synthesis method. The experiments were performed using the spherical grating monochromator beamline at the National Synchrotron Radiation Research Center in Taiwan. We found that soft X-ray irradiation induces structural changes that can be interpreted as an amorphization of the processed silicate material. The present results may have relevant implications in the evolution of silicate materials in X-ray-irradiated protoplanetary disks. 其他題名： APJ 其他題名： Astrophys. J 出版者： United States: The American Astronomical Society 出版日期： 2016-09-01 出處： The Astrophysical Journal, 2016-09, Vol.828 (1), p.29--29 資源來源： Institute of Physics Journals 版權： 2016. The American Astronomical Society. All rights reserved. 識別號： ISSN: 0004-637X 識別號： ISSN: 1538-4357 識別號： EISSN: 1538-4357 識別號： DOI: 10.3847/0004-637X/828/1/29
显示于类别:	[物理學系] 期刊論文

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