Langmuir probe measurements of plasma parameters in the late stages of a laser ablated plume

A simple Langmuir probe technique has been used to measure the electron density, electron temperature, and plasma potential in the late stages (>5 μs) of a laser ablated plasma plume. In the plasma, formed following 248 nm laser irradiation of a copper target, in vacuum at a laser fluence of 2.5...

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Published in:Journal of applied physics 1997-03, Vol.81 (5), p.2131-2134
Main Authors: Hendron, J. M., Mahony, C. M. O., Morrow, T., Graham, W. G.
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Language:English
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description A simple Langmuir probe technique has been used to measure the electron density, electron temperature, and plasma potential in the late stages (>5 μs) of a laser ablated plasma plume. In the plasma, formed following 248 nm laser irradiation of a copper target, in vacuum at a laser fluence of 2.5 J cm−2, electron densities of ∼1018 m−3 and temperatures of ∼0.5 eV were measured. These values are comparable with those reported previously using Faraday cup detectors and optical emission spectroscopy, respectively.
doi_str_mv 10.1063/1.364265
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title Langmuir probe measurements of plasma parameters in the late stages of a laser ablated plume
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