Airborne LIDAR mapping of SF/sub 6/ concentration distributions for transport and diffusion studies. [ALARM]

Technical Report · Fri Aug 01 00:00:00 EDT 1986

OSTI ID:5324400

Uthe, E E; Nielsen, N B; Livingston, J M; Johnson, W B; Morley, B M

The Airborne Lidar Agent Remote Monitor (ALARM) uses two downward-pointing, high-energy (1 J), line-tunable CO/sub 2/ lasers operating in the 9- to 11-..mu..m wavelength region. By tuning one laser to a wavelength of maximum absorption and the other laser to a wavelength of minimum absorption of a gas species, column-content (vertically integrated) gas concentrations can be made from terrain lidar returns, and altitude-resolved concentations can be made from atmospheric aerosol lidar returns. The tracer gas SF/sub 6/ has a strong absorption band within the tuning range of the ALARM system. A field demonstration of the ALARM capabilities for measurement of SF/sub 6/ was designed and conducted with geometries and conditions similar to those that might occur in the event of an accidental radioactive gas release.

• Research Organization: SRI International, Menlo Park, CA (USA)
• OSTI ID: 5324400
• Report Number(s): NUREG/CR-4698; ON: TI86901665
• Country of Publication: United States
• Language: English

Related Subjects

500101 -- Environment
Atmospheric-- Basic Studies-- Radiometric Techniques-- (-1989)
500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
A CODES
ATMOSPHERIC CHEMISTRY
CHEMISTRY
COMPUTER CODES
EARTH ATMOSPHERE
ENVIRONMENTAL TRANSPORT
ISOTOPE APPLICATIONS
MASS TRANSFER
RADIONUCLIDE MIGRATION
TRACER TECHNIQUES