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Elevated temperature measurements during a hypervelocity impact process

Tsembelis, Kostantinos (1998) Elevated temperature measurements during a hypervelocity impact process. Doctor of Philosophy (PhD) thesis, University of Kent. (doi:10.22024/UniKent/01.02.86078) (KAR id:86078)

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Official URL
https://doi.org/10.22024/UniKent/01.02.86078

Abstract

Experiments have been performed using the 2 MV Van de Graaff dust accelerator facility of the University of Kent at Canterbury. Iron dust particles were accelerated towards a glass target. Velocities in the range 5-20km s\(^{-1}\) were attained for particles of mass 10\(^{-17}\)-10\(^{-14}\)kg. Intensity of the resulting light flash was then measured for two different wavelengths and the temperature of the ejecta cloud was found assuming black body emission.

Experimental results were compared against one dimensional predictions based on equilibrium thermodynamics. A mie-Gruneisen equation of state was assumed for the glass target. Shock state and subsequent release gave an estimation for the temperature.

Finally, a simple model was constructed to simulate glass hypervelocity impacts with the use of hydrocodes. Although numerical and computational deficiencies limited the use of hydrocodes to predict ejecta cloud temperatures, it was possible to use the mode to estimate the dimensions of the impact craters on glass and compare them with published data.

Item Type: Thesis (Doctor of Philosophy (PhD))
DOI/Identification number: 10.22024/UniKent/01.02.86078
Additional information: This thesis has been digitised by EThOS, the British Library digitisation service, for purposes of preservation and dissemination. It was uploaded to KAR on 09 February 2021 in order to hold its content and record within University of Kent systems. It is available Open Access using a Creative Commons Attribution, Non-commercial, No Derivatives (https://creativecommons.org/licenses/by-nc-nd/4.0/) licence so that the thesis and its author, can benefit from opportunities for increased readership and citation. This was done in line with University of Kent policies (https://www.kent.ac.uk/is/strategy/docs/Kent%20Open%20Access%20policy.pdf). If you feel that your rights are compromised by open access to this thesis, or if you would like more information about its availability, please contact us at ResearchSupport@kent.ac.uk and we will seriously consider your claim under the terms of our Take-Down Policy (https://www.kent.ac.uk/is/regulations/library/kar-take-down-policy.html).
Uncontrolled keywords: Astrophysics
Subjects: Q Science > QB Astronomy
SWORD Depositor: SWORD Copy
Depositing User: SWORD Copy
Date Deposited: 29 Oct 2019 16:27 UTC
Last Modified: 16 Nov 2021 10:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/86078 (The current URI for this page, for reference purposes)
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