Optical properties of methane to 288 GPa at 300 K

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	Optical properties of methane to 288 GPa at 300 K
	Sun, LL ; Ruoff, AL ; Zha, CS ; Stupian, G
刊名	JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
	2006
卷号	67 期号:12 页码:2603
关键词	DIAMOND-ANVIL CELL X-RAY-DIFFRACTION HIGH-PRESSURE SOLID HYDROGEN MULTIMEGABAR PRESSURES GIANT PLANETS SUPERCONDUCTIVITY SULFUR METAL MBAR
ISSN号	0022-3697
通讯作者	Ruoff, AL (reprint author), Cornell Univ, Dept Mat Sci & Engn, 214 Bard Hall, Ithaca, NY 14853 USA.
中文摘要	Optical properties of solid methane (CH4) were studied at high pressure and room temperature using a diamond anvil cell. Reflectivity and transmission measurements were used to measure the refractive index to 288 GPa. Fabry-Perot interferometery was used to measure the sample thickness to 172 GPa. This data was fitted to the derived expression of thickness vs. pressure that was then used to calculate the thickness to 288 GPa. This in turn was combined with optical absorption experiments to obtain the absorption coefficient and hence the extinction coefficient k. From combined reflection and absorption experiments the refractive index n=n(s)+ik() was obtained. The index of refraction and the ratio of molar refraction to molar volume showed a large increase between 208 and 288 GPa. This behavior indicated that a phase transformation of insulator-semiconductor might have occurred in solid CH4 by 288 GPa. (c) 2006 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/50338]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Sun, LL,Ruoff, AL,Zha, CS,et al. Optical properties of methane to 288 GPa at 300 K[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2006,67(12):2603.
APA	Sun, LL,Ruoff, AL,Zha, CS,&Stupian, G.(2006).Optical properties of methane to 288 GPa at 300 K.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,67(12),2603.
MLA	Sun, LL,et al."Optical properties of methane to 288 GPa at 300 K".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 67.12(2006):2603.