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Composition and dynamics of an erosion plasma produced by microsecond laser pulses

机译：微秒激光脉冲产生的腐蚀等离子体的组成和动力学

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The ion and energy compositions were determined and the dynamics was studied of an erosion plume formed by microsecond CO2 laser pulses incident on a graphite target. The ionic emission lines were used to find the electron density and temperature of the plasma on the target surface. The temperature of the plasma source did not change throughout the line emission time (4 ms). At the plasma recombination stage the lines of the C II, C III, and C IV ions were accompanied by bands of the C2 molecule near the target surface and also near the surface of an substrate when a plasma flow interacted with it. Ways were found for controlling the plume expansion anisotropy and for producing plasma flows with controlled parameters by selection of the conditions during formation of a quasisteady erosion plasma flow.
机译：确定离子和能量的组成，并研究由入射到石墨靶上的微秒CO2激光脉冲形成的腐蚀羽流的动力学。离子发射线用于找到目标表面上等离子体的电子密度和温度。等离子体源的温度在整个线发射时间（4毫秒）内没有变化。在等离子重组阶段，当等离子流与其相互作用时，C II，C III和C IV离子的谱线伴随着目标表面附近以及基质表面附近的C2分子带。发现了通过在准稳态腐蚀等离子体流的形成过程中选择条件来控制羽状膨胀各向异性和产生具有受控参数的等离子体流的方法。

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