Fabrication of Titanium Doped Hollow Glass Microspheres for Inertial Confinement Fusion Targets by Dried Gel Method

摘要

Titanium doped hollow glass microspheres (HGMs) with atom ratio of Ti to Si (Ti/Si) from 2% to 20% were fabricated by dried gel method. Effects of titanium concentration on elements distribution and properties of gels and HGMs were investigated. Results show that elements in both gels and HGMs distribute uniformly when Ti/Si is no more than 5%. On the contrary, sodium chlorides separate out and acetic acids volatilize from gels with a higher titanium concentration and the elements distribution becomes nonuniform. Furthermore, loss of sodiums and acetate ions results in insufficient blowing and refining during the HGMs fabrication process and further leads to the decrease of quality on morphology, geometry and uniformity of spheres.