Accession Number : ADA307743

Title :   Gas-Dynamic Investigations in a Shock Tube using a Highly Sensitive Interferometer,

Corporate Author : INSTITUT FRANCO-ALLEMAND DE RECHERCHES SAINT-LOUIS (FRANCE)

Personal Author(s) : Smeets, G. ; George, A.

PDF Url : ADA307743

Report Date : 16 APR 1996

Pagination or Media Count : 36

Abstract : The laser-interferometer described in the technical report ISL T 21/70 underwent development. Utilizing a 15 mW He-Ne laser at 6328 angstroms, and a PIN photodiode as a detector, optical path changes can now be measured with an uncertainty of 0.1 angstroms and a resolution in time of about 20 ns. Various experiments on shock tube arrangements were conducted to demonstrate the wide range of applicability and the advantages of this technique.

Descriptors :   *GAS DYNAMICS, *HELIUM NEON LASERS, *INTERFEROMETERS, *SHOCK TUBES, OPTICS, PATHS, SENSITIVITY, RANGE(EXTREMES), PHOTODIODES, PINS.

Subject Categories : Lasers and Masers
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE