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Experimental Characterization of Cooling-Induced Deformation of Polystyrene Shells

T. Endo, K. Shibata, N. Kobayashi, M. Yasuda, Y. Fujima, T. Norimatsu

Fusion Science and Technology / Volume 41 / Number 3P1 / May 2002 / Pages 242-247

Technical Paper / Fourteenth Target Fabrication Specialists' Meeting /

Cooling-induced deformation (CID) of polystyrene shells was experimentally characterized in detail. In the experiments, polystyrene shells were cooled using liquid nitrogen and observed with an optical microscope. Pictures of each shell were recorded at various temperatures, and they were compared with each other. As a result of precise error estimation, it has been found that any polystyrene shell shows CID in varying degrees. And we have recognized that some shells show poor repeatability and poor monotonicity about CID.

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