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Title: Microradiographic characterization of metal and polymer coated microspheres

Abstract

X-ray microradiography is used to make measurements of opaque metal and polymer coatings on hollow glass microspheres which are used as laser fusion targets at the Lawrence Livermore National Laboratory. Metal coatings include platinum, tantalum, gold, copper, and beryllium where thicknesses range from 1 to 10 mm on 70 to 200 mm diameter mandrels. Contact film images are made with x-ray energies from 1 to 50 keV, depending on the material and geometry. The recorded x-ray images show the internal structure of the coatings which is not observable with optical and SEM techniques. The film images are digitized and directly measured using a small computer-based image analysis system. Wall thicknesses and nonconcentricity can be measured to within 0.3 mm, and diameters to within 1.5 mm.

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory, P.O. Box 5508, Livermore, California 94550
OSTI Identifier:
6350707
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
J. Vac. Sci. Technol.; (United States)
Additional Journal Information:
Journal Volume: 18:3
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; METALS; MICRORADIOGRAPHY; POLYMERS; BERYLLIUM; CARBON FLUORIDES; COATINGS; COPPER; DATA PROCESSING; GLASS; GOLD; HYDROCARBONS; IMAGE SCANNERS; INERTIAL CONFINEMENT; LASER FUSION REACTORS; LASER TARGETS; MICROSPHERES; PLATINUM; TANTALUM; THICKNESS; X RADIATION; ALKALINE EARTH METALS; CARBON COMPOUNDS; CONFINEMENT; DIMENSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; ORGANIC COMPOUNDS; PLASMA CONFINEMENT; PLATINUM METALS; PROCESSING; RADIATIONS; REFRACTORY METALS; TARGETS; THERMONUCLEAR REACTORS; TRANSITION ELEMENTS; 700208* - Fusion Power Plant Technology- Inertial Confinement Technology

Citation Formats

Singleton, R M, and Weir, J T. Microradiographic characterization of metal and polymer coated microspheres. United States: N. p., 1981. Web. doi:10.1116/1.570910.
Singleton, R M, & Weir, J T. Microradiographic characterization of metal and polymer coated microspheres. United States. https://doi.org/10.1116/1.570910
Singleton, R M, and Weir, J T. Wed . "Microradiographic characterization of metal and polymer coated microspheres". United States. https://doi.org/10.1116/1.570910.
@article{osti_6350707,
title = {Microradiographic characterization of metal and polymer coated microspheres},
author = {Singleton, R M and Weir, J T},
abstractNote = {X-ray microradiography is used to make measurements of opaque metal and polymer coatings on hollow glass microspheres which are used as laser fusion targets at the Lawrence Livermore National Laboratory. Metal coatings include platinum, tantalum, gold, copper, and beryllium where thicknesses range from 1 to 10 mm on 70 to 200 mm diameter mandrels. Contact film images are made with x-ray energies from 1 to 50 keV, depending on the material and geometry. The recorded x-ray images show the internal structure of the coatings which is not observable with optical and SEM techniques. The film images are digitized and directly measured using a small computer-based image analysis system. Wall thicknesses and nonconcentricity can be measured to within 0.3 mm, and diameters to within 1.5 mm.},
doi = {10.1116/1.570910},
url = {https://www.osti.gov/biblio/6350707}, journal = {J. Vac. Sci. Technol.; (United States)},
number = ,
volume = 18:3,
place = {United States},
year = {1981},
month = {4}
}