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Use of combined light flash and plasma measurements to study hypervelocity impact processes

Burchell, Mark J., Kay, L., Ratcliff, P.R. (1996) Use of combined light flash and plasma measurements to study hypervelocity impact processes. Advances in Space Research, 17 (12). pp. 141-145. ISSN 0273-1177. (doi:10.1016/0273-1177(95)00772-7) (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)

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://dx.doi.org/10.1016/0273-1177(95)00772-7

Abstract

We present new measurements concerning generation of light flash during hypervelocity impacts. We use iron particles (10(-13) to 10(-17) kg) with velocities over the range 1 to 42 km/s impacting semi-infinite targets (aluminium and molybdenum). The main results of previous work in the field are found to be reproduced with some slight deviations. For iron projectiles with given mass and velocity the energy of the flash (normalized to mass) is proportional to velocity to the power of 3.5 for aluminium targets and 3.9 for molybdenum targets. The duration of the flash is of order 1 microsecond. Simultaneous measurements of the generation of impact plasma do not change this. The onset of plasma generation of the bulk target material does not affect the total light flash energy. We discuss the duration of the flash compared to a simple calculation of temperature in the target and plasma vs time.

Item Type: Article
DOI/Identification number: 10.1016/0273-1177(95)00772-7
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Faculties > Sciences > School of Physical Sciences
Depositing User: Mark Burchell
Date Deposited: 24 Oct 2009 11:16 UTC
Last Modified: 01 Aug 2019 10:30 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/5031 (The current URI for this page, for reference purposes)
Burchell, Mark J.: https://orcid.org/0000-0002-2680-8943
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