Ultraviolet absorption experiment MA-059

Details Ultraviolet absorption experiment MA-059 Ultraviolet absorption experiment MA-059

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apso.nasa.....d&link_type=abstract

In its Apollo-Soyuz Test Project 22 p (SEE N76-23074 13-88)

Physics

Apollo Soyuz Test Project, Nitrogen Atoms, Oxygen Atoms, Ultraviolet Absorption, Atomic Beams, Atomic Spectra, Cosmic Gases, Ultraviolet Spectrometers

Scientific paper

The ultraviolet absorption experiment performed during the Apollo Soyuz mission involved sending a beam of atomic oxygen and atomic nitrogen resonance radiation, strong unabsorbable oxygen and nitrogen radiation, and visual radiation, all filling the same 3 deg-wide field of view from the Apollo to the Soyuz. The radiation struck a retroreflector array on the Soyuz and was returned to a spectrometer onboard the Apollo. The density of atomic oxygen and atomic nitrogen between the two spacecraft was measured by observing the amount of resonance radiation absorbed when the line joining Apollo and Soyuz was perpendicular to their velocity with respect to the ambient atmosphere. Information concerning oxygen densities was also obtained by observation of resonantly fluorescent light. The absorption experiments for atomic oxygen and atomic nitrogen were successfully performed at a range of 500 meters, and abundant resonance fluorescence data were obtained.

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