Burchell, M.J. and Cole, M.J. and McDonnell, J.A.M. and Zarnecki, J.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.
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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.
|Uncontrolled keywords:||hypervelocity; impact; ionization|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||M. Nasiriavanaki|
|Date Deposited:||03 Jul 2009 07:53|
|Last Modified:||03 Jul 2009 07:53|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/17148 (The current URI for this page, for reference purposes)|
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