Optical Bases for Remote Biological Aerosol Detection.
Abstract
Measurements and calculations to determine whether lidar techniques based on fluorescence can remotely detect and identify biological aerosols were made. B. subtilis, in isotonic saline, was tested by absorption measurements. Extinction (scattering plus absorption) was measured. At the absorption peak near 265 nm, optical densities for scatter and absorption were each nearly 0.5 for 10 to the 8th power organisms/ml. Extinction as a function of wavelength, using Baird Atomic SF-1 light source will be investigated. Relatively dilute samples (for B. subtilis 0.000005 organism/ml) should be used. Plans for calibration of the Baird-Atomic Fluorispec SF-1 have been modified. The laboratory van is nearly serviceable.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 23, 1976
- Accession Number
- ADA028289
Entities
People
- William B. Grant
Organizations
- SRI International