Relaksatsiya (Relaxation) makes UV spectrometer observations of the chemiluminescent reactions in the Xenon plasma from firings of the two PCUs (plasma contactor units) installed on the U.S. Z1 truss.Principal Investigator(s)
Russian Federal Space Agency (Roscosmos)Sponsoring Organization
Information PendingResearch Benefits
Information PendingISS Expedition Duration:
December 2001 - September 2011Expeditions Assigned
4,5,6,8,9,10,11,12,13,15,16,17,18,19/20,21/22,23/24,25/26,27/28Previous ISS Missions
Investigation of chemiluminescent chemical reactions and atmospheric optical phenomena occurring during high-speed interaction between jet engine exhausts and the Earth's upper atmosphere, atmospheric optical phenomena during re-entry of bodies into rarified upper atmosphere and its optical properties in the UV range.
Information PendingEarth Applications
UV camera, Spectrometer, Video camera, set of interference filters.Operational Protocols
Conducting radiometric and spectrometric measurements in the UV range: Radiation emitted in reactions of interaction between ISS RS propulsion system exhaust products and atomic oxygen; Radiation emitted in reactions of interaction of Soyuz and Progress propulsion system exhaust products during undocking maneuvers, retroburns and re-entry into the Earth's upper atmosphere; Spacial distribution and emission spectra of atmospheric formations and phenomena.
Determining the effects of propulsion system exhausts on the Earth's upper atmosphere and ISS environment on optically sensitive surfaces (windows, equipment lenses, solar array panels). In perspective, simulation of atmospheric optical phenomena in ultra-violet, visible and near-infrared spectral bands (Earth atmosphere nightglow, SC re-entry glow, planetary atmospheric glow).
Plastinin YA, Karabadzhak GF, Khmelinin BA. Remote Measurement of the atomic oxygen distribution in Earth atmosphere from International Space Station. 46th Aerospace Sciences Meeting and Exhibit, Reno, NV; 2008