Porosity effects on crystallization kinetics of amorphous solid water: Implications for cold icy objects in the outer solar system

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• 作者：Emily H. Mitchell^a ; ^{ehm4qb@virginia.edu} ; Ujjwal Raut^b ; Benjamin D. Teolis^b ; Raú ; l A. Baragiola^a ; ¹
• 关键词：Ices ; IR spectroscopy ; Ices ; UV spectroscopy ; Satellites ; surfaces ; Europa ; Thermal histories
• 刊名：Icarus
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：285
• 期：Complete
• 页码：291-299
• 全文大小：1218 K
• 卷排序：285

文摘

Amorphous ice films retain a fraction of their initial porosity when heated from 10 K to 130–141 K. Ice crystallization unfolds in two distinct kinetic stages. Nucleation initiates at external interface first, then at internal pore surfaces. Highly porous ices crystallize significantly faster than low-porosity ices. Porosity can reduce crystallization time for Outer Solar System ices.