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Morphology of craters generated by hypervelocity impacts of micron-sized polypyrrole-coated olivine particles

Li, Y. W., Bugiel, S., Trieloff, M., Hillier, Jon K., Postberg, F., Price, M. C., Shu, A., Fiege, K., Fielding, L. A., Armes, S. P., and others. (2014) Morphology of craters generated by hypervelocity impacts of micron-sized polypyrrole-coated olivine particles. Meteoritics & Planetary Science, 49 (8). pp. 1375-1387. ISSN 1086-9379. (doi:10.1111/maps.12338) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:60024)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://doi.org/10.1111/maps.12338

Abstract

To understand the process of cosmic dust particle impacts and translate crater morphology on smoothed metallic surfaces to dust properties, correct calibration of the experimental impact data is needed. This article presents the results of studies of crater morphology generated by impacts using micron-sized polypyrrole (PPy)-coated olivine particles. The particles were accelerated by an electrostatic dust accelerator to high speeds before they impacted onto polished aluminum targets. The projectile diameter and velocity ranges were 0.3–1.2 ?m and 3–7 km s?1. After impact, stereopair images of the craters were taken using scanning electron microscope and 3-D reconstructions made to provide diameter and depth measurements. In this study, not just the dimensions of crater diameters and depths, but also the shape and dimensions of crater lips were analyzed. The craters created by the coated olivine projectiles are shown to have complicated shapes believed to be due to the nonspherical shape of the projectiles.

Item Type: Article
DOI/Identification number: 10.1111/maps.12338
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Mark Price
Date Deposited: 23 Jan 2017 12:13 UTC
Last Modified: 29 May 2019 18:35 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/60024 (The current URI for this page, for reference purposes)
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