Refractive fringe diagnostic of a ruby-laser produced plasma using a short pulse, short wavelength nitrogen laser

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, , Citation P F Cunningham et al 1986 J. Phys. E: Sci. Instrum. 19 957 DOI 10.1088/0022-3735/19/11/017

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1 Dept. of Phys., Natal Univ., Durban, South Africa

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0022-3735/19/11/957

Abstract

An improved analysis of the refractive fringe diagnostic is developed. The assumption of a ring focus used by earlier workers is shown to be invalid. The improved technique is used to analyse shadowgrams obtained using a synchronised sub-nanosecond nitrogen laser to probe a ruby-laser-produced plasma. Electron density profiles are de-convolved.

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