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Hypervelocity impacts in the Solar System: An experimental investigation on the fate of the impactor.

Avdellidou, Chrysoula (2016) Hypervelocity impacts in the Solar System: An experimental investigation on the fate of the impactor. Doctor of Philosophy (PhD) thesis, University of Kent, CAPS. (KAR id:54994)

Language: English
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Collisions is one of the most important processes in the Solar System that have played a significant role in its evolution for 4.5 Gy. They are responsible for the formation of asteroid families, craters and regolith production on bodies surfaces. Moreover they pose a hazard for our planet's environment, human civilisation and space assets. Impacts have shaped the asteroids and their surfaces and recently there are indications that they are also responsible for the creation of multi-lithology asteroids.

Although there is advance in our understanding of crater formation, target fragmentation and ejecta speeds, however the fate of the impactor is still very poorly constrained. Experiments so far were focused using materials not directly relevant to the composition of asteroids.

This Thesis is divided in six Chapters. The first two, Chapters 1 and 2, are giving a review of recent advances of small bodies studies, the importance of collisions in the Solar System, and a brief description of the laboratory impact experiments, providing the current state of research on the fate of projectiles. Some open questions lead to the explanation of the aim of this study. In Chapter 3 are described the series of experiments performed, explaining the analysis methods were developed and the way that the main topics of fragmentation, implantation and characterisation of the impactor were studied. All the results for each one of these topics, along with the difficulties during the experimental procedure are provided in Chapter 4. In Chapter 5 we discuss the results giving the implications, attempting to place the outcome in the big picture of the small bodies collisions. In the last Chapter 6 there is a summary of this work, providing also possible future ideas for the continuation of this study.

Item Type: Thesis (Doctor of Philosophy (PhD))
Thesis advisor: Price, Mark C.
Uncontrolled keywords: impacts, asteroids
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Users 1 not found.
Date Deposited: 15 Apr 2016 11:00 UTC
Last Modified: 29 May 2019 17:13 UTC
Resource URI: (The current URI for this page, for reference purposes)
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