High intensity 5 eV cw laser substained O-atom exposure facility for material degradation studies

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Description

An atomic oxygen exposure facility has been developed for studies of material degradation. The goal of these studies is to provide design criteria and information for the manufacture of long life (20 to 30 years) construction material for use in low earth orbit. The studies that are being undertaken using the facility will provide (1) absolute reaction cross sections for use in engineering design problems, (2) formulations of reaction mechanisms for use in selection of suitable existing materials and design of new more resistant ones, and (3) calibration of flight hardware (mass spectrometers, etc.) in order to directly relate experiments ... continued below

Physical Description

Pages: 19

Creation Information

Cross, J.B.; Spangler, L.H.; Hoffbauer, M.A. & Archuleta, F.A. January 1, 1986.

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Description

An atomic oxygen exposure facility has been developed for studies of material degradation. The goal of these studies is to provide design criteria and information for the manufacture of long life (20 to 30 years) construction material for use in low earth orbit. The studies that are being undertaken using the facility will provide (1) absolute reaction cross sections for use in engineering design problems, (2) formulations of reaction mechanisms for use in selection of suitable existing materials and design of new more resistant ones, and (3) calibration of flight hardware (mass spectrometers, etc.) in order to directly relate experiments performed in low earth orbit to ground based investigations. The facility consists of (1) a cw laser sustained discharge source of O-atoms having a variable energy up to 5 eV and an intensity of between 10/sup 15/-10/sup 17/ O-atoms s/sup -1/ cm/sup -2/, (2) an atomic beam formation and diagnostics system consisting of various stages of differential pumping, mass spectrometer detector and time-of-flight analysis, (3) a spinning rotor viscometer for absolute O-atom flux measurements, and (4) provision for using the system for calibration of flight instruments. 15 refs., 10 figs.

Physical Description

Pages: 19

Notes

NTIS, PC A02/MF A01.

Source

  • 14. space simulation conference, Baltimore, MD, USA, 3 Nov 1986

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  • Other: DE86015297
  • Report No.: LA-UR-86-2831
  • Report No.: CONF-861182-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5245928
  • Archival Resource Key: ark:/67531/metadc1074620

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1986

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • April 2, 2018, 1:17 p.m.

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Cross, J.B.; Spangler, L.H.; Hoffbauer, M.A. & Archuleta, F.A. High intensity 5 eV cw laser substained O-atom exposure facility for material degradation studies, article, January 1, 1986; United States. (digital.library.unt.edu/ark:/67531/metadc1074620/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.