Accession Number : ADA192920

Title :   Asynchronous Optical Sampling for Laser-Based Combustion Diagnostics in High Pressure Flames.

Descriptive Note : Annual rept. 15 Dec 86-14 Dec 87,

Corporate Author : PURDUE UNIV LAFAYETTE IN

Personal Author(s) : King, Galen B ; Laurendeau, Normand M ; Lytle, Fred E

PDF Url : ADA192920

Report Date : 20 Jan 1988

Pagination or Media Count : 22

Abstract : This report describes progress on the development of a new laser based combustion diagnostic for the quantitative measurement of both major and minor species in high pressure flames. The technique, Asynchronous Optical Sampling (ASOPS), is a state-of-the-art improvement in picosecond pump/probe spectroscopy. The timing parameters for the current ASOPS instrument are described and consideration is given to the optimization of these parameters. The first ASOPS measurements in a combustion environment have been made on atomic sodium. These measurements are compared with laser induced fluorescence measurements to demonstrate the viability of ASOPS as a combustion diagnostic.

Descriptors :   *COMBUSTION, *FLAMES, *SAMPLING, *LASER APPLICATIONS, *DIAGNOSTIC EQUIPMENT, *EXHAUST GASES, ASYNCHRONOUS SYSTEMS, ENVIRONMENTS, HIGH PRESSURE, LASER INDUCED FLUORESCENCE, SPECTROSCOPY, LASER PUMPING, NITROUS OXIDE, CARBON MONOXIDE

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE