Sputter deposited beryllium fuel capsules for NIF

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Description

The objective of our effort is to systematically study the properties of films produced under different conditions, with an emphasis on improving surface morphology and microstructure while studying permeability and capsule strength. We have made extensive use of atomic force and electron microscopy to determine the microstructure of the films, along with composition probes (mainly x-ray fluorescence) to quantify the chemical structure. Our studies can be roughly divided into three categories. First, there are those in which the effects of substrate biasing have been investigated. This includes varying the substrate voltage from 0 to 120 V and applying an intermittent ... continued below

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11 p.

Creation Information

Alford, C.S. February 12, 1998.

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Description

The objective of our effort is to systematically study the properties of films produced under different conditions, with an emphasis on improving surface morphology and microstructure while studying permeability and capsule strength. We have made extensive use of atomic force and electron microscopy to determine the microstructure of the films, along with composition probes (mainly x-ray fluorescence) to quantify the chemical structure. Our studies can be roughly divided into three categories. First, there are those in which the effects of substrate biasing have been investigated. This includes varying the substrate voltage from 0 to 120 V and applying an intermittent bias. Next there are studies of Be combined with boron, a non-soluble dopant Because of it`s low Z this dopant is of particular interest for x-ray related applications. Finally, there are experiments in which pulses of nitrogen are admitted to the vacuum chamber during deposition. The layers of nitride formed tended to disrupt the growth of Be grains, leading to a more fine-grained microstructure. For all these studies, we have most often used hollow plastic spheres for our substrate material. However, there have been some samples deposited on glass spheres or silicon flats.

Physical Description

11 p.

Notes

INIS; OSTI as DE98054674

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  • Other Information: PBD: 12 Feb 1998

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  • Other: DE98054674
  • Report No.: UCRL-ID--129463
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/305832 | External Link
  • Office of Scientific & Technical Information Report Number: 305832
  • Archival Resource Key: ark:/67531/metadc674137

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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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  • February 12, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 8, 2017, 12:46 p.m.

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Alford, C.S. Sputter deposited beryllium fuel capsules for NIF, report, February 12, 1998; California. (digital.library.unt.edu/ark:/67531/metadc674137/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.