Accession Number:

AD0815270

Title:

ATTENUATION OF LASER RADIATION BY HC, FS, WP, AND FOG OIL SMOKES.

Descriptive Note:

Technical rept. May-Oct 66,

Corporate Author:

EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD

Report Date:

1967-06-01

Pagination or Media Count:

38.0

Abstract:

The object of this project was to determine the feasibility of employing conventional smoke aerosols as potential countermeasures against laser radiation devices. A pulsed ruby laser, generating radiation at a wave-length of 6943A, was the radiation source. The percent attenuation of the laser beam was measured as the beam traversed hexachloroethane HC, sulfur trioxide-chlorosulfonic acid FS, white phosphorus WP, and fog oil smokes contained in a closed chamber. The percent transmittance of a white-light beam through the smoke was also measured. From these measurements, the relative total obscuring power was calculated for both white-light and laser radiation. It is concluded that WP, FS, HC, and fog oil smokes attenuate a 0.3-j laser radiation of 6943A by approximately the same percentage as white light. For a 2,000-w laser light power level, the laser white-light transmittance curves for smoke clouds follow the Beer-Lambert relationship down to the 90 attenuation level. Smokescreens appear to be an effective countermeasure against the tested ruby laser. Author

Subject Categories:

  • Lasers and Masers
  • Pyrotechnics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE