6533b7cffe1ef96bd1258ed8
RESEARCH PRODUCT
Observer for a thick layer of solid deuterium-tritium using backlit optical shadowgraphy and interferometry.
Eric BusvelleG. PascalJean-paul GauthierA. Chouxsubject
Physicsbusiness.industryMaterials Science (miscellaneous)Context (language use)Observer (special relativity)ShadowgraphyLaserIndustrial and Manufacturing Engineeringlaw.inventionInterferometryOpticslawBusiness and International ManagementPerturbation theorybusinessInertial confinement fusionLaser Mégajouledescription
Our work is in the context of the French "laser megajoule" project, about fusion by inertial confinement. The project leads to the problem of characterizing the inner surface, of the approximately spherical target, by optical shadowgraphy techniques. Our work is entirely based on the basic idea that optical shadowgraphy produces "caustics" of systems of optical rays, which contain a great deal of 3D information about the surface to be characterized. We develop a method of 3D reconstruction based upon this idea plus a "small perturbations" technique. Although computations are made in the special "spherical" case, the method is in fact general and may be extended to several other situations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-11-19 | Applied optics |