Forming and smoothing D{sub 2} and HD layers for ICF by infra-red heating

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Description

We describe a technique to form and smooth uniform solid D{sub 2}, HD or DT layers for inertial confinement fusion targets. Pumping the infrared (IR) collision induced vibration-rotation band generates a bulk heating of the solid. Shadowgraphs reveal that this bulk heat quickly redistributes the solid into a relatively uniform layer depending on the IR intensity profile. Measured redistribution time constants are used to determine the conversion efficiency of IR light into bulk heat. Phase shifting interferometry reveals that the surface roughness decreases with increasing IR heating.

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6 p.

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Collins, G.W.; Tiszauer, D.; Feit, M.; Mapoles, E.R.; Bernat, T.P.; Bittner, D.N. et al. May 31, 1996.

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Description

We describe a technique to form and smooth uniform solid D{sub 2}, HD or DT layers for inertial confinement fusion targets. Pumping the infrared (IR) collision induced vibration-rotation band generates a bulk heating of the solid. Shadowgraphs reveal that this bulk heat quickly redistributes the solid into a relatively uniform layer depending on the IR intensity profile. Measured redistribution time constants are used to determine the conversion efficiency of IR light into bulk heat. Phase shifting interferometry reveals that the surface roughness decreases with increasing IR heating.

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6 p.

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INIS; OSTI as DE96013890

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  • 24. European conference on laser interaction with matter, Madrid (Spain), 3-7 Jun 1996

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  • Other: DE96013890
  • Report No.: UCRL-JC--124255
  • Report No.: CONF-9606229--12
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 371291
  • Archival Resource Key: ark:/67531/metadc682976

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  • May 31, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 18, 2016, 5:13 p.m.

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Collins, G.W.; Tiszauer, D.; Feit, M.; Mapoles, E.R.; Bernat, T.P.; Bittner, D.N. et al. Forming and smoothing D{sub 2} and HD layers for ICF by infra-red heating, article, May 31, 1996; California. (digital.library.unt.edu/ark:/67531/metadc682976/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.