Accession Number : ADA134129

Title :   Optical Probing of Photoacoustic Propagation for Noncontact Measurement of Flows, Temperatures and Chemical Compositions.

Descriptive Note : Technical rept.,

Corporate Author : IBM RESEARCH LAB SAN JOSE CA

Personal Author(s) : Tam,A C ; Zapka,W ; Coufal,H ; Sullivan,B

PDF Url : ADA134129

Report Date : 21 Oct 1983

Pagination or Media Count : 12

Abstract : Noncontact techniques of optical probing of photoacoustic pulses provide new opportunities for ultrasonic and/or spectroscopic measurement in hostile environments (e.g., flames, corrosive fluids, dangerous aerosols, etc.) and also basic understanding of photoacoustic generation processes. This paper provides examples of such applications in the new field of 'optical ultrasonics' (whereby ultrasonic determinations of flows, temperatures, etc., are measured optically), including 'optical ultrasonic spectroscopy' (whereby ultrasonic dispersion and relaxations are measured optically).

Descriptors :   *Ultrasonics, *Optical analysis, *Measuring instruments, Probes, Remote detectors, Measurement, Flow, Temperature, Chemical composition, Spectroscopy, Caustics, Chemical analysis

Subject Categories : Test Facilities, Equipment and Methods
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE