Document Detail


A conceptual design for cosmo-biology experiments in Earth's Orbit.
MedLine Citation:
PMID:  11541875     Owner:  NASA     Status:  MEDLINE    
Abstract/OtherAbstract:
A conceptual design was developed for a cosmo-biology experiment. It is intended to expose simulated interstellar ice materials deposited on dust grains to the space environment. The experimental system consists of a cryogenic system to keep solidified gas sample, and an optical device to select and amplify the ultraviolet part of the solar light for irradiation. By this approach, the long lasting chemical evolution of icy species could be examined in a much shorter time of exposure by amplification of light intensity. The removal of light at longer wavelength, which is ineffective to induce photochemical reactions, reduces the heat load to the cryogenic system that holds solidified reactants including CO as a constituent species of interstellar materials. Other major hardware components were also defined in order to achieve the scientific objectives of this experiment. Those are a cold trap maintained at liquid nitrogen temperature to prevent the contamination of the sample during the exposure, a mechanism to exchange multiple samples, and a system to perform bake-out of the sample exposure chamber. This experiment system is proposed as a candidate payload implemented on the exposed facility of Japanese Experiment Module on International Space Station.
Authors:
H Hashimoto; M Greenberg; A Brack; L Colangeli; G Horneck; R Navarro-Gonzalez; F Raulin; A Kouchi; T Saito; M Yamashita; K Kobayashi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Uchū Seibutsu Kagaku     Volume:  12     ISSN:  0914-9201     ISO Abbreviation:  Biol. Sci. Space     Publication Date:  1998 Jun 
Date Detail:
Created Date:  1999-08-15     Completed Date:  1999-08-15     Revised Date:  2009-06-04    
Medline Journal Info:
Nlm Unique ID:  100972048     Medline TA:  Biol Sci Space     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  106-11     Citation Subset:  S    
Affiliation:
Institute of Engineering Mechanics, University of Tsukuba, Japan. hhashi@kz.tsukuba.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Cold Temperature
Cosmic Dust*
Cosmic Radiation*
Evolution, Chemical
Exobiology
Extraterrestrial Environment*
Ice*
Photochemistry
Research Design
Space Flight / instrumentation*
Ultraviolet Rays
Weightlessness
Chemical
Reg. No./Substance:
0/Cosmic Dust; 0/Ice

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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