TIME EVOLUTION AND DUST PRODUCTION IN CATASTROPHIC FRAGMENTATION BY HYPERVELOCITY IMPACTS

被引：9

作者：

DIMARTINO, M ^{[1
]}

MARTELLI, G ^{[1
]}

SMITH, PN ^{[1
]}

WOODWARD, AW ^{[1
]}

机构：

[1] UNIV SUSSEX,SPACE & PLASMA PHYS GRP,BRIGHTON BN1 9RH,E SUSSEX,ENGLAND

来源：

ICARUS | 1990年 / 83卷 / 01期

关键词：

D O I：

10.1016/0019-1035(90)90010-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on what we believe to be the first direct experimental evidence, obtained from the analysis of very fast framing pictures of free-falling bodies disrupted catastrophically by hypervelocity impacts, that at least two separate disruption mechanisms (cratering and bulk fragmentation) operate during impact over two different time scales. This may account for the peculiar "knee" present in log-log cumulative distributions of fragments reported by many authors, including ourselves. An analysis of the dust produced during such events has also been performed. © 1990.

引用

页码：126 / 132

页数：7