Transient Radiation Darkening Features in VISAR Window

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We have studied and characterized radiation-induced changes in the index of refraction of materials used in Z experiments. Interferometric measurements of the radiation-induced change in the real part, n, of the complex index of refraction, N = n + iK, have been made in lithium fluoride (LiF), sapphire, and fused silica samples. Our results indicate that the index changes are small, with {delta}n/n {approx} 1 x 10{sup -5}/kGy. In addition, we have characterized the dose dependence of the radiation-induced transient radiation darkening (TRD) of these materials, which is related to K, the imaginary part of the refractive index. We have ... continued below

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23 pages

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Stevens, G. D. & Moy, K. J. June 2001.

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Description

We have studied and characterized radiation-induced changes in the index of refraction of materials used in Z experiments. Interferometric measurements of the radiation-induced change in the real part, n, of the complex index of refraction, N = n + iK, have been made in lithium fluoride (LiF), sapphire, and fused silica samples. Our results indicate that the index changes are small, with {delta}n/n {approx} 1 x 10{sup -5}/kGy. In addition, we have characterized the dose dependence of the radiation-induced transient radiation darkening (TRD) of these materials, which is related to K, the imaginary part of the refractive index. We have also measured time-resolved spectral profiles of TRD in LiF and sapphire, and have examined the results in terms of known color centers and possible colloid aggregation.

Physical Description

23 pages

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INIS; OSTI as DE00788708

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  • Other Information: PBD: 1 Jun 2001

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  • Report No.: DOE/NV/11718--592
  • Grant Number: AC08-96NV11718
  • DOI: 10.2172/788708 | External Link
  • Office of Scientific & Technical Information Report Number: 788708
  • Archival Resource Key: ark:/67531/metadc717804

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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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  • June 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 15, 2016, 11:44 a.m.

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Stevens, G. D. & Moy, K. J. Transient Radiation Darkening Features in VISAR Window, report, June 2001; Nevada. (digital.library.unt.edu/ark:/67531/metadc717804/: accessed January 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.