Title

The Measurement Of The Distribution Of The Extinction Coefficients Of Laser Produced Aluminum Plumes

Abstract

Radial spectral intensities were measured using a He:Ne probe laser scanning an aluminum plume formed by Nd:Glass laser irradiation of a target surface. Further, techniques were developed to measure the radial distributions of the extinction coefficients in an axi-symmetric, laser produced aluminum plume. The techniques developed allow for measurements of these distributions as functions of time, wavelength, and elevation above the aluminum target. The extinction coefficients determine the ability of the plasma to attenuate incident laser radiation. The extinction coefficient distribution was determined by scanning a He:Ne probe laser through the plume and converting line of sight measurements to a radial distribution. Results indicate that the aluminum plume is optically thin in the first 80 microseconds after formation and that the profile has a Gaussian distribution.

Publication Date

1-1-1993

Publication Title

AIAA 24th Plasma Dynamics, and Lasers Conference, 1993

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.1993-3228

Socpus ID

85002131822 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85002131822

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