Laser-Excited Opto-Acoustic Pulses in a Flame
Abstract
Pulsed pressure waves are produced by energy transfer from electronically excited Na or Li atoms seeded in an acetylene-air flame; the excitation is provided by a resonantly tuned, pulsed laser. Temperature increases of approximately one degree within the flame produce signals easily detected by a microphone. A description of the phenomenon is given, and preliminary results are presented for two possible applications: localized speed-of-sound measurements and quenching rate determinations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA102620
Entities
People
- David R. Crosley
- John E. Allen Jr.
- William R. Anderson
Organizations
- Ballistic Research Laboratory