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Proceedings Paper

An In-Vacuum BR/TDF Measurement Apparatus
Author(s): L E Gilliam; R A Osiecki
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Paper Abstract

An in-vacuum BR/TDF measurement apparatus has just been assembled as part of a larger space environmental effects facility. The sample stage and detector assemblies are mounted within and the requisite optics train and light sources external to a 48-in. diameter vacuum chamber. The chopped and field stopped f/60 incident beam enters the chamber through a window of appropriate material. Argon ion, helium neon, and CO2 lasers, as well as a xenon arc lamp, are used as light sources. Beam size on the sample is about 1-cm diameter with the detectors mounted on a 60-cm arm. The detectors can be rotated from within about 2° of the incident beam to directly facing the incident beam and can measure reflectance of a normally incident beam to about 83° and transmittance from 150° to 180°.

Paper Details

Date Published: 3 June 1987
PDF: 5 pages
Proc. SPIE 0675, Stray Radiation V, (3 June 1987); doi: 10.1117/12.939480
Show Author Affiliations
L E Gilliam, Lockheed Missiles & Space Company (United States)
R A Osiecki, Lockheed Missiles & Space Company (United States)


Published in SPIE Proceedings Vol. 0675:
Stray Radiation V
Robert P. Breault, Editor(s)

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