X-RAY IRRADIATION of H2O + CO ICE MIXTURES with SYNCHROTRON LIGHT

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108459

Title:	X-RAY IRRADIATION of H2O + CO ICE MIXTURES with SYNCHROTRON LIGHT
Authors:	陳俞融;Jiménez-Escobar, A.;Chen, Y.-J.;Ciaravella, A.;Huang, C.-H.;Micela, G.;Cecchi-Pestellini, C.
Contributors:	理學院物理學系
Keywords:	astrochemistry;ISM: molecules;methods: laboratory: molecular;molecular processes
Date:	2016-03-20
Issue Date:	2026-04-23 14:50:30 (UTC+8)
Publisher:	IOP Publishing Ltd.;The American Astronomical Society
Abstract:	摘要： ABSTRACT We irradiated a (4:1) mixture of water and carbon monoxide with soft X-rays of energies up to 1.2 keV. The experiments were performed using the spherical grating monochromator beamline at National Synchrotron Radiation Research Center in Taiwan. Both monochromatic (300 and 900 eV) and broader energy fluxes (250-1200 eV) were employed. During the irradiation, the H2O + CO mixture was ionized, excited, and fragmented, producing a number of reactive species. The composition of the ice has been monitored throughout both the irradiation and warm-up phases. We identified several products, which can be related through a plausible chemical reaction scheme. Such chemistry is initiated by the injection of energetic photoelectrons that produce multiple ionization events generating a secondary electron cascade. The results have been discussed in light of a model for protoplanetary disks around young solar-type stars. 其他題名： APJ 其他題名： Astrophys. J 出版者： The American Astronomical Society 出版日期： 2016-03-20 出處： The Astrophysical journal, 2016-03, Vol.820 (1) 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/820/1/25
Appears in Collections:	[Department of Physics] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	26	View/Open

社群 sharing

Loading...