Accession Number : ADA302533

Title :   Photochemically Deposited Contaminant Film Effects: Data Archive. Volume 1.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS

Personal Author(s) : Arnold, G. S. ; Luey, K.

PDF Url : ADA302533

Report Date : 15 SEP 1994

Pagination or Media Count : 39

Abstract : Perhaps the most pernicious types of spacecraft contaminants are photochemically deposited ('solarized') molecular films. This report documents the results from a project aimed at improving control of thermo-optical effects of contamination in the design of spacecraft. Photodeposition results and analyses of the ultraviolet and visible transmission spectra of films from several organic precursor molecules are reported. The major differences among contaminant film types have been found to be in the initial photodeposition propensity, rather than in the ultimate optical properties of the films. Appendix A - Spectra and fit results from the bisphenol-A photo-deposit. Appendix B - Spectra and fit results for the DC704 photodeposit. Appendix C - Spectra and fit results for the DEHP photo-deposit. Appendix D - Spectra and fit results for the squalene photo-deposit. jg p3

Descriptors :   *SPACECRAFT, *PHOTOCHEMICAL REACTIONS, *FILMS, *DEPOSITION, *CONTAMINANTS, *ARCHIVES, *MONOMOLECULAR FILMS, THERMAL PROPERTIES, DATA PROCESSING, OPTICAL PROPERTIES, ULTRAVIOLET RADIATION, MOLECULES, PRECURSORS, CRYSTALS, QUARTZ, LIGHT TRANSMISSION, ORGANIC COMPOUNDS, VISIBLE SPECTRA, CONTAMINATION, PHENOLS, OUTGASSING, MICROBALANCES.

Subject Categories : Radiation and Nuclear Chemistry
      Physical Chemistry
      Laminates and Composite Materials
      Atomic and Molecular Physics and Spectroscopy
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE