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Study of silica aerogel grain surfaces by using a positron age-momentum correlation technique
Suzuki, N; Oonishi, T; Hyodo, T; Chang, T
2002
发表期刊APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷号74期号:6页码:791-795
通讯作者Univ Tokyo, Inst Phys, Grad Sch Arts & Sci, Meguro Ku, Tokyo 1538902, Japan ; Inst High Energy Phys, Nat Lab, Beijing 100080, Peoples R China
摘要The effect of heat treatment on silica aerogel has been studied by a positron age-momentum correlation technique and infrared measurement. A difference was observed between the momentum distributions of the electrons on the first layers of the silica aerogel grain surfaces and the electrons in the grains in an as-supplied sample, but not in the sample heat treated at 800 degreesC. A large change in the S parameter for the momentum distribution of the electrons on the first layer occurs around 200 degreesC. This change correlates well with that of the infrared spectra, which show oxidation of the methoxyl groups at temperatures above around 200 degreesC. This correlation reveals that those groups are mainly located on the first layer of the silica grains.
文章类型Article
学科领域Materials Science; Physics
研究领域[WOS]Materials Science ; Physics
DOI10.1007/s003390100970
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语种英语
WOS类目Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号WOS:000175356200013
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238498
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Suzuki, N,Oonishi, T,Hyodo, T,et al. Study of silica aerogel grain surfaces by using a positron age-momentum correlation technique[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2002,74(6):791-795.
APA Suzuki, N,Oonishi, T,Hyodo, T,&Chang, T.(2002).Study of silica aerogel grain surfaces by using a positron age-momentum correlation technique.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,74(6),791-795.
MLA Suzuki, N,et al."Study of silica aerogel grain surfaces by using a positron age-momentum correlation technique".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 74.6(2002):791-795.
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