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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 D. 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 14 Nov 2016 10:54

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