Accession Number:

ADD013519

Title:

Nephelometer.

Descriptive Note:

Patent, Filed 18 Jun 81, patented 1 Mar 83,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1983-03-01

Pagination or Media Count:

9.0

Abstract:

Described is a nephelometer and method for measuring optical quality of a marine atmosphere and particularly characterizing its aerosol particle size distribution, visual range and aerosol optical effects in the visible and infrared. There is provided a housing for entrapping a momentary aerosol sampling, a laser source for providing a narrow collimated beam of radiant energy usually light through the sample, and plural spaced-apart cosine sensors facing across the radiant energy illuminated sample, with one reading a slightly greater angle than the other, for receiving aerosol particle scattered light. Integrated outputs from the sensors when compared with laser output intensity as a reference signal provide an indication of aerosol particle size distribution and concentration.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Meteorology
  • Lasers and Masers
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE