二次喉道扩压器对COIL的影响实验  

Experimental study on influence of secondary-throat diffuser on COIL

作　　者：蔡光明[1] 刘军[1] 王永振[1] 朱连贵[1] 李春领[1] 谢秀芳[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2005年第12期1807-1811,共5页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：氧碘化学激光器分别采用二次喉道扩压器和8°扩压器时,对在不同阀门开度下的气流方向的壁面静压曲线和背压曲线,光轴壁面静压曲线,出口总压与上游压比值曲线,输出功率曲线进行了测量。对两种扩压器的数据进行了对比,结果表明:与8°扩压器相比,二次喉道扩压器能够有效隔离扩压器下游气流对光腔的干扰,显著减小捩区长度,并将转捩区控制在扩压器内。在激光器背压升高时,二次喉道扩压器的稳定性更强。A secondary-throat diffuser and an 8°diffuser are used respectively on COIL. The performance parameters of the two diffusers are measured and compared. The result indicates that the secondary-throat diffuser may effectively insulate the flow disarrangement from the diffuser, avoid the down-stream flow disarrangement into the optical resonator, improve the stability of static-pressure in resonator, and enhance the stability of the output power of COIL. The secondary-throat diffuser is propitious to COIL at high back-pressure.

关 键 词：氧碘化学激光器 光腔 扩压器 总压损失 压力恢复 

分 类 号：TN246[电子电信—物理电子学]