ELLIPSOMETRY IN THE STUDY OF DYNAMIC MATERIAL PROPERTIES

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Description

Measurements of the time-dependent absolute temperature of surfaces shocked using high explosives (HE) provide valuable constraints on the equations-of-state (EOS) of materials and on the state of ejecta from those surfaces. In support of these dynamic surface temperature measurements, techniques for measuring the dynamic surface emissivity of shocked metals in the near infrared (IR) are being developed. These consist of time-dependent laser ellipsometric measurements, using several approaches. A discussion of these ellipsometric techniques is included here. Ellipsometry permits an accurate determination of the dynamic emissivity at a given wavelength, and may also provide a signature of melt in shocked metals.

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5 p.

Creation Information

Obst, A. W. (Andrew W.); Alrick, K.R. (Keith R.); Boboridis, K.; Buttler, William T.; Lamoreaux, Steve Keith; Montgomery, S. L. (Stefanie L.) et al. January 1, 2001.

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Description

Measurements of the time-dependent absolute temperature of surfaces shocked using high explosives (HE) provide valuable constraints on the equations-of-state (EOS) of materials and on the state of ejecta from those surfaces. In support of these dynamic surface temperature measurements, techniques for measuring the dynamic surface emissivity of shocked metals in the near infrared (IR) are being developed. These consist of time-dependent laser ellipsometric measurements, using several approaches. A discussion of these ellipsometric techniques is included here. Ellipsometry permits an accurate determination of the dynamic emissivity at a given wavelength, and may also provide a signature of melt in shocked metals.

Physical Description

5 p.

Source

  • "Submitted to: SCCM [Shock Compression of Condensed Matter] Conference in Atlanta, GA, June 2001."

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  • Report No.: LA-UR-01-3483
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975589
  • Archival Resource Key: ark:/67531/metadc933764

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  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 5:48 p.m.

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Obst, A. W. (Andrew W.); Alrick, K.R. (Keith R.); Boboridis, K.; Buttler, William T.; Lamoreaux, Steve Keith; Montgomery, S. L. (Stefanie L.) et al. ELLIPSOMETRY IN THE STUDY OF DYNAMIC MATERIAL PROPERTIES, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc933764/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.