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Science 15 May 1970:
Vol. 168. no. 3933, pp. 820 - 822
DOI: 10.1126/science.168.3933.820
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Articles

Filamentary Crystal Growth Associated with Impact Craters from Hypervelocity Microparticles

Otto E. Berg 1 and J. A. M. McDonnell 1

1 Theoretical Studies Branch, Goddard Space Flight Center, Greenbelt, Maryland 20771

A filamentary crystal growth is associated with impacts of hypervelocity microparticles upon copper foil. They are copper whiskers formed by the condensation of the target material vaporzied by the impact.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)