Filling Hollow Glass Microspheres With Ar by Method of Gas Diffusion

In proposed laser fusion experiemnts,the quality and confinement and com- pressed core can be measured directly using X-ray spectroscopy techniques provided a high atomic number gas such as Ar.The paper concerns in techniques of filling hollow glass microshells with Ar by the method of gas diffusion.Experiments show that no Ar is found below 500℃.Under the condition of 600℃and 1.0 MPa Ar out of micro- spheres for 24 h,there is as much as 0.003 MPa Ar inner the hollow glass shell.The surface finish decreases from no more than 20 nm to 50-100 nm and the yield of micro- spheres which survived the fill procedure is no more than 50%with the diffusion tem- perature of 600℃.