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

J.M. Hendron, C.M.O. Mahony, Thomas Morrow, Bill Graham

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

A simple Langmuir probe technique has been used to measure the electron density, electron temperature, and plasma potential in the late stages (>5 mu s) 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 similar to 10(18) m(-3) and temperatures of similar to 0.5 eV were measured. These values are comparable with those reported previously using Faraday cup detectors and optical emission spectroscopy, respectively. (C) 1997 American Institute of Physics.
Original languageEnglish
Pages (from-to)2131-2134
Number of pages4
JournalJournal of Applied Physics
Volume81
Publication statusPublished - 1997

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