高重复率脉冲放电金属蒸气激光中电泳对金属蒸气分布的影响  

Influence of cataphoresis on metal vapor distribution in high repetition rate pulsed discharge metal vapor lasers

作　　者：夏婷婷[1] 钟建伟[1] 毛邦宁[1] 陈钢[1] 姚志欣[1] 潘佰良[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2006年第1期202-205,共4页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10374081;10574111);惯性约束聚变技术探索基金(批准号:2004AA84TS04)资助的课题~~

摘　　要：建立了一个理论模型描述了高重复率脉冲放电金属蒸气激光中的电泳动力学过程.得到了稳态和瞬态时金属蒸气密度扩散方程的解析表达式.分别计算了高重复率脉冲放电的He-Sr+和He-Cd+激光在不同时刻金属蒸气密度的轴向分布过程.结果表明,在放电开始后约2s内即可在阴极区建立起相当均匀的轴向金属蒸气密度分布,从而确保了电泳式金属蒸气激光的稳定输出特性.A theoretic model has been established to describe the cataphoresis dynamics in high repetition rate （HRR） pulsed discharge metal vapor lasers （MVLs）. The analytic solutions for transient and steady-state diffusion equations of metal vapor concentration are obtained. The axial distribution processes of metal vapors in HRR pulsed discharge He-Sr^＋ and He-Cd^＋ lasers have been calculated. It shows that the axial metal vapor distribution between the metal source and the cathode reaches sufficient homogeneity in about 2s, thus ensuring the stable output characteristics of cataphoresis MVLs.

关 键 词：电泳 高重复率脉冲放电 轴向金属蒸气分布 金属蒸气激光 

分 类 号：TN241[电子电信—物理电子学]