Plasma expansion produced by a long-pulse CO2 laser
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Published:1980-11-01
Issue:11
Volume:58
Page:1585-1588
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ISSN:0008-4204
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Container-title:Canadian Journal of Physics
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language:fr
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Short-container-title:Can. J. Phys.
Author:
Neufeld C. R.,Lachambre J. L.
Abstract
We have studied the plasma expansion produced when a 25 ns CO2 laser pulse is focussed onto a massive aluminium target. The maximum laser power density available was 2 × 1012 W cm−2 in a focal spot of approximately 250 μm in diameter. Charge collector measurements of the ions in the blow-off plasma indicate that an isothermal expansion model best describes the motion of the bulk of the plasma ions. Strong competing effects thus seem to inhibit the establishment of the steady-state regime expected for sufficiently long laser pulses, although faint indications of the beginnings of such a trend may be present.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
1 articles.
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