Burchell, M.J. and Cole, M.J. and McDonnell, J.A.M. (1998) Role of particle charge in impact ionization by charged microparticles. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 143 (3). pp. 311-18. ISSN 0168-583X.
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| Official URL http://dx.doi.org/10.1016/S0168-583X(98)00371-1 |
Abstract
The role of particle charge in generating ionization of projectile and target in impacts of iron microparticles on copper has been investigated at impact velocities above 1 km s(-1). Charged microparticles are accelerated in an electrostatic accelerator and their surface charge subsequently reduced in flight by passage through a thin conducting film. It is found that a reduction in projectile charge of 80% at 5 km s(-1) reduces noticeably the degree of impact ionization. This supports the recent assertion that heating due to current flow between the particle and target immediately prior to impact may play a significant role in impact ionization at such velocities.
| Item Type: | Article |
|---|---|
| Uncontrolled keywords: | hypervelocity; impact; ionization |
| Subjects: | Q Science Q Science > QC Physics |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Physical Sciences |
| Depositing User: | I. Ghose |
| Date Deposited: | 05 Apr 2009 09:31 |
| Last Modified: | 11 May 2009 11:41 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/17612 (The current URI for this page, for reference purposes) |
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