Accession Number:

ADA143967

Title:

A Study of Long Aerosol Initiated Laser Induced Air Breakdown Plasmas.

Descriptive Note:

Memorandum rept. Oct 82-Sep 83,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1984-06-29

Pagination or Media Count:

37.0

Abstract:

Results from three separate experiments on aerosol initiated, laser induced, air breakdown are described. The purpose of these experiments was to determine the maximum length of air breakdown plasma that can be created with a given laser pulse. Two separate neodymium glass lasers were used the first produced an output pulse of 30 J in 60 ns and the second produced 200 J in 4 ns. Both pulses were at the wavelength of 1.06 micron. Two of the experiments used the aerosol produced by burning black gunpowder in the atmosphere which gave a mean particle size of about 0.5 micron. The third experiment attempted to use ragweed pollen with a mean particle size of about 10 micron, but these particles could not be adequately dispersed and no useful results were obtained.

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE