Optical properties of low-density foams considered as targets for inertial confinement fusion
| Autor: | J. D. Sethian, L. Y. Chan, Sharka M. Prokes, O. J. Glembocki, M. L. Rebbert, C.R.K. Marrian |
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| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Materials science Opacity business.industry Scattering Surfaces and Interfaces Polymer Condensed Matter Physics Light scattering Surfaces Coatings and Films chemistry.chemical_compound Optics chemistry Light scattering by particles Optoelectronics business Absorption (electromagnetic radiation) Ethylene glycol Inertial confinement fusion |
| Zdroj: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 16:50-56 |
| ISSN: | 1520-8559 0734-2101 |
| Popis: | An optical method for measuring scattered light, namely by analyzing the transmitted light, is used to characterize the optical properties of low-density foams that are candidates as targets for inertial confinement fusion. This method allows us to simultaneously measure both scattering and intrinsic absorption in the foam. Three types of foams have been examined: two have similar chemistries and are based on either ethylene glycol dimetacrylate (EGDM) or trimethylolpropane trimethacrylate (TMPT). The other one is based on resorcinol formaldehyde (RF). We observe that while the RF foams are orange in color and nearly transparent, the EGDM/TMPT based foams are white and opaque. The opacity of these foams is shown to be due to light scattering by particles having dimensions on the order of 200 nm. In contrast, the light scattering from the RF foams indicates that the structures scattering light are on the order of 20 nm. The orange color of the RF foams is shown to be due to intrinsic absorption of light by... |
| Databáze: | OpenAIRE |
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