Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 41 / Number 3P1 / Pages 220-225
A. Nikroo, J.M. Pontelandolfo, E.R. Castillo
Fusion Science and Technology / Volume 41 / Number 3P1 / Pages 220-225
Format:electronic copy (download)
Targets for the National Ignition Facility (NIF) need to be about 200 μm thick and 2 mm in diameter. These dimensions are well beyond those currently fabricated on a routine basis. We have investigated fabrication of near NIF scale targets using the depolymerizable mandrel technique. Poly-alpha-methylstyrene (PAMS) mandrels, about 2 mm in diameter, of varying qualities were coated with as much as 125 μm of glow discharge polymer (GDP). The surface finish of the final shells was examined using a variety of techniques. A clear dependence of the modal spectrum of final GDP shell on the quality of the initial PAMS mandrels was observed. Isolated features were found to be the greatest cause for a shell not meeting the NIF standard.
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