Analysis of Laser Fusion Targets Using Monochromatic X-Ray Microradiographs

摘要

A new contact microradiographic system for analyzing laser fusion targets with two-dimensional modeling and image-analysis techniques is described. This system, which uses a monochromatic x-ray source and Kodak High-Resolution Plate emulsion, is sensitive to spherical wall-thickness variations (eccentricities) as small as +- 200 A in hollow shells with a mean wall thickness of 1 micrometer. Measurements of wall thickness and of local and spherical wall-thickness variations by radiographic techniques, using two-dimensional video, digital image analysis, and optical interferometry, are compared. In addition, three digitizing systems are compared for converting the radiographic data to digital form. (ERA citation 04:014830)