空心玻璃微球热扩散法充Ar

Filling Hollow Glass Microspheres With Ar by Method of Gas Diffusion

摘要: 采用热扩散法研究高温高压充Ar技术。研究结果表明，当温度低于500 ℃时，玻璃微球球内基本检测不到Ar；在600 ℃高温条件下可实现微量Ar气的渗透；在外压1.0 MPa、24 h条件下，球内Ar最高含量为0.003 MPa；延长充气时间和增加外压均不能使微球内Ar量增加；随着充气温度升高，微球表面粗糙度由原来的不到20 nm增加到50～100 nm，微球损失也增大；在600 ℃、1.0 MPa条件下，玻璃微球开始出现形变或破裂，微球损失超过50％。

Abstract: In proposed laser fusion experiemnts, the quality and confinement and compressed 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 microspheres 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 microspheres which survived the fill procedure is no more than 50% with the diffusion temperature of 600 ℃.