Mechanism of forward development of a plasma produced by an excimer laser in high-pressure argon gases
Mechanism of forward development of a plasma produced by an excimer laser in high-pressure argon gases
复制标题
高压氩气中准分子激光器产生等离子体的正向发展机制
DOI：
10.1063/1.372149
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
J. Yamada
中科院分区：
文献类型：
--
作者：
Norio Tsuda;J. Yamada
在高达 150 atm 的高压氩气中，XeCl 准分子激光器产生的等离子体不仅向后发展，而且向前发展。向前发展的模型称为向前击穿波，无法预测后期的发展行为。修改了开发模型，新考虑了当激光穿过后向等离子体时等离子体对激光的吸收。使用电子-离子碰撞的逆轫致辐射来计算每个距离处吸收系数的时间变化。与之前的模型相比，该修改后的模型可以更好地预测未来的发展行为。
In high-pressure argon gases up to 150 atm, the plasma produced by a XeCl excimer laser developed not only backward but also forward. The model for the forward development, called a forward breakdown wave, could not predict the developmental behavior in the latter stage. The development model was modified, newly taking into account the laser absorption by the plasma when the laser light was transmitted through the backward plasma. The time variation of the absorption coefficient at each distance was calculated using the inverse bremsstrahlung by the electron–ion impact. This modified model could better predict the forward development behavior than the previous model.