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Proceedings Paper

UV laser diagnostic system for combustion research under microgravity at drop tower Bremen
Author(s): Hans Stephen Albrecht; Daniel Mueller; T. Schroeder; Wolfgang Triebel; Ch. Eigenbrod; Jens Koenig; T. Bolik; T. Behrens; Hartmut Renken; Hans J. Rath
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Paper Abstract

This paper describes a UV laser diagnostic system by means of which laser spectroscopic experiments were performed under microgravity conditions in a ground-based drop tower for the first time. A tunable, narrow bandwidth excimer laser is positioned at the top of the drop tower. The laser beam enters a falling drop capsule containing a specially adapted burner or combustion chamber. By the use of laser induced fluorescence spectroscopy measurements of 2D concentration and temperature profiles can be performed. Solutions of selected experimental problems such as laser beam collimation over a distance of more than 120 m, compensation of capsule drift, signal detection, and data acquisition (250 frames/s, 4.7 s measuring period), are discussed in detail. First measurements of laser induced predissociation fluorescence of OH radicals in a methanol flame under microgravity conditions are presented.

Paper Details

Date Published: 20 September 1995
PDF: 9 pages
Proc. SPIE 2506, Air Pollution and Visibility Measurements, (20 September 1995); doi: 10.1117/12.221012
Show Author Affiliations
Hans Stephen Albrecht, Institut fuer Physikalische Hochtechnologie eV (Germany)
Daniel Mueller, Institut fuer Physikalische Hochtechnologie eV (Germany)
T. Schroeder, Institut fuer Physikalische Hochtechnologie eV (Germany)
Wolfgang Triebel, Institut fuer Physikalische Hochtechnologie eV (Germany)
Ch. Eigenbrod, Univ. Bremen (Germany)
Jens Koenig, Univ. Bremen (Germany)
T. Bolik, Univ. Bremen (Germany)
T. Behrens, Univ. Bremen (Germany)
Hartmut Renken, Univ. Bremen (Germany)
Hans J. Rath, Univ. Bremen (Germany)

Published in SPIE Proceedings Vol. 2506:
Air Pollution and Visibility Measurements
Peter Fabian; Volker Klein; Maurus Tacke; Konradin Weber; Christian Werner, Editor(s)

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