Fabrication of glass sphere laser fusion targets

Abstract

This Is a preprint of a paper intended for publication in a lournai or proceedings. Since changes may be made before publication, this preprint is made available with the understanding that it will not be cited or reproduced without the permission of the author.

Microsphere Fabrication and Applications: an Overview

“…Through the use of cores of polystyrene latex and other polymer spheres and employing various coating techniques such as slurry coating and plating However, methods exist in this generic approach capable of generating hollow and solid microspheres which meet very demanding specifications on sphericity, diameter, and wall thickness control. 45 These methods are based on the use of well designed nozzle systems which will dispense individual liquid droplets (or spheres) to carefully controlled dimensions of the material of interest into the reactor. The reactor serves to convert the liquid droplet to the firm hollow or solid microsphere with the composition and properties of interest.…”

“…Glass Layer Precursor of Hollow Glass Sphere HGS In a second broadly used concept for creating hollow microspheres, the droplet contains a "blowing agent" -species that will produce a gas during the heating which occurs during flight through the drop tower.52,53,54,55,56,57, 58 The gases may be H 2 0, C0 2 , SO 2 and other products of species entrapped or decomposed on heating. As noted above, gelled particles are particularly well suited to create hollow structures utilizing a heated drop tower reactor.…”

Porous Materials

“…The gelation of sols into spheres was subsequently extended to ceramics intended for nonnuclear uses. These ceramics include zirconia, titania, silica, and alumina [184][185][186][187][188][189][190][191][192].…”

Preparation and properties of hollow glass microspheres for use in laser fusion experiments

“…in some orientations defects may not be visible. 5 ' With our present production scheme we do not look at individual spheres and then repo sition them. Instead, because the droplet method proe' jces very large numbers of spheres, we de termine the batch quality statistical')" by examin ing groups of 30 to 50 sr'.teres at a time ( Fig.…”