Hybrid superaggregate morphology as a result of aggregation in a cluster-dense aerosol

被引:35
作者
Dhaubhadel, R [1 ]
Pierce, F [1 ]
Chakrabarti, A [1 ]
Sorensen, CM [1 ]
机构
[1] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA
来源
PHYSICAL REVIEW E | 2006年 / 73卷 / 01期
关键词
D O I
10.1103/PhysRevE.73.011404
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 [等离子体物理]; 080103 [流体力学]; 080704 [流体机械及工程];
摘要
From the digitized pictures of soot clusters formed after the explosion of a hydrocarbon gas mixed with oxygen, the cluster morphology was determined by two different methods: structure factor and perimeter analysis. We find a hybrid, superaggregate morphology characterized by a fractal dimension of D approximate to 1.8 between the monomer size, ca. 50 nm, and 1 mu m and D approximate to 2.6 at larger length scales up to similar to 10 mu m. The superaggregate morphology is a consequence of late-stage aggregation in a cluster-dense regime near a gel point.
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页数:4
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