Matrix sublimation method for the formation of high-density amorphous ice

被引：19

作者：

Kouchi, A. ^{[1
]}

Hama, T. ^{[1
]}

Kimura, Y. ^{[1
]}

Hidaka, H. ^{[1
]}

Escribano, R. ^{[2
]}

Watanabe, N. ^{[1
]}

机构：

[1] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan

[2] CSIC, IEM, E-28006 Madrid, Spain

来源：

CHEMICAL PHYSICS LETTERS | 2016年 / 658卷

关键词：

Matrix sublimation; Ice; High-density amorphous ice; LIQUID WATER; SOLID WATER; VITRIFICATION; SPECTRA; GPA; CO;

D O I：

10.1016/j.cplett.2016.06.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel method for the formation of amorphous ice involving matrix sublimation has been developed. A CO-rich CO:H2O mixed ice was deposited at 8-10 K under ultra-high vacuum condition, which was then allowed to warm. After the sublimation of matrix CO at 35 K, amorphous ice remained. The amorphous ice formed exhibits a highly porous microscale texture; however, it also rather exhibits a density similar to that of high-density amorphous ice formed under high pressure. Furthermore, unlike conventional vapor-deposited amorphous ice, the amorphous ice is stable up to 140 K, where it transforms directly to cubic ice Ic. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：287 / 292

页数：6

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