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Hypervelocity impact studies using the 2 MV Van de Graaff accelerator and two-stage light gas gun of the University of Kent at Canterbury

Burchell, Mark J., Cole, Mike J., McDonnell, J.A.M., Zarnecki, John C. (1999) Hypervelocity impact studies using the 2 MV Van de Graaff accelerator and two-stage light gas gun of the University of Kent at Canterbury. Measurement Science & Technology, 10 (1). pp. 41-50. ISSN 0957-0233. (doi:10.1088/0957-0233/10/1/011) (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:37212)

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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/10.1088/0957-0233/10/1/011

Abstract

The hypervelocity impact facilities of the University of Kent are described. They comprise a 2 MV Van de Graaff accelerator for the electrostatic acceleration of dust particles (mass 10(-19)-10(-13) kg and velocities 0.5-90 km s(-1)) and a two-stage light gas gun firing millimetre-sized particles at 1-5.7 km s(-1). Results for impact ionization studies using iron dust accelerated in the Van de Graaff and hitting a variety of metal targets (gold, silver, indium, iron, rhodium and molybdenum) are presented. Over the range 2-80 km s(-1),the ionization yields are found to be similar to within a factor of 20 at low velocity and converge to within a factor of five at high velocity. The light gas gun is used to investigate the volumes of craters in metal targets for impacts of 1 mm diameter stainless steel spheres on aluminium at velocities in the range 2-5 km s(-1). For normal incidence the crater volume scales with the square of the impact velocity. For oblique impacts at a fixed velocity (5 km s(-1)) it is found that the crater volume scales with the cosine of the impact angle.

Item Type: Article
DOI/Identification number: 10.1088/0957-0233/10/1/011
Uncontrolled keywords: hypervelocity; impact; ionization
Subjects: Q Science
Q Science > QB Astronomy
Q Science > QC Physics
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: 05 Dec 2013 12:16 UTC
Last Modified: 01 Aug 2019 10:36 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/37212 (The current URI for this page, for reference purposes)
Burchell, Mark J.: https://orcid.org/0000-0002-2680-8943

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