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Tracking ground state Ba+ ions in an expanding laser–plasma plume using time-resolved vacuum ultraviolet photoionization imaging

Hirsch, John S. and Kavanagh, Kevin and Kennedy, Eugene T. and Costello, John T. and Nicolosi, P. and Poletto, L. (2004) Tracking ground state Ba+ ions in an expanding laser–plasma plume using time-resolved vacuum ultraviolet photoionization imaging. Laser and Particle Beams, 22 (3). pp. 207-213. ISSN 0263-0346

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Abstract

We report results from a study of the integrated column density and expansion dynamics of ground-state-selected Ba+ ions in a laser–plasma plume using a new experimental system—VPIF (vacuum-ultraviolet photoabsorption imaging facility). The ions are tracked by recording the attenuation of a pulsed and collimated vacuum ultraviolet beam, tuned to the 5p–6d inner-shell resonance of singly ionized barium, as the expanding plasma plume moves across it. The attenuated beam is allowed to fall on a CCD array where the spatial distribution of the absorption is recorded. Time-resolved ion velocity and integrated column density maps are readily extracted from the photoionization images.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:barium; imaging; laser plasma; photoabsorption; vacuum ultraviolet;
Subjects:Physical Sciences > Physics
DCU Faculties and Centres:Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:Cambridge University Press
Official URL:http://dx.doi.org/10.1017/S0263034604223035
Copyright Information:Copyright © 2004 Cambridge University Press
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Higher Education Authority, Irish Research Council for Science Engineering and Technology, Science Foundation Ireland, Enterprise Ireland
ID Code:15633
Deposited On:06 Aug 2010 13:29 by DORAS Administrator. Last Modified 06 Aug 2010 13:29

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