Plume splitting and sharpening in laser-produced aluminium plasma
Plume splitting and sharpening in laser-produced aluminium plasma
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DOI：
10.1088/0022-3727/35/22/307
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发表时间：
2002-11
期刊：
影响因子：
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通讯作者：
S. S. Harilal-S.;C. Bindhu;M. Tillack;F. Najmabadi;A. C. Gaeris
中科院分区：
文献类型：
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作者：
S. S. Harilal-S.;C. Bindhu;M. Tillack;F. Najmabadi;A. C. Gaeris
利用倍频Nd: YAG激光产生532 nm， 8 ns脉冲的铝等离子体，观察到羽流分裂和锐化现象。测量采用2ns门控快速摄影以及空间和时间分辨光学发射光谱。研究了不同背景气压下羽流前缘的运动，比较了不同膨胀模型下羽流前缘的膨胀。将成像与时间分辨发射诊断相结合，观察到羽流的三重结构。
Plume splitting and sharpening were observed in laser-produced aluminium plasma created using 532 nm, 8 ns pulses from a frequency doubled Nd : YAG laser. Measurements were made using 2 ns gated fast photography as well as space and time resolved optical emission spectroscopy. The motion of the leading edge of the plume was studied with several background air pressures and the expansion of the plume front was compared with various expansion models. Combining imaging together with time resolved emission diagnostics, a triple structure of the plume was observed.