Observation and analysis of flow field in laser ablation plume of POM

Kefei Liu; Jifei Ye

doi:10.1117/12.2179855

13 April 2015 Observation and analysis of flow field in laser ablation plume of POM

Kefei Liu, Jifei Ye

Proceedings Volume 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II; 95221B (2015) https://doi.org/10.1117/12.2179855
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China

Abstract

When using YAG laser emit strong laser pulses to bombardment solid POM, in the areas of interaction will produce a plume. A shadowgraph photography technique was employed for visualizing temporal evolution of plume. The experiment results show that in the plume flow field, multi-density discontinuities were observed. The plume has a high speed towards laser source, and plume uneven expansion makes the shape and position of discontinuities change. Plume velocity affect the propulsive efficiency, enhance the pulse laser energy can speed up the plume, energy increase to a certain degree of plume speed will reach a steady-state value.

Citation Download Citation

Kefei Liu and Jifei Ye "Observation and analysis of flow field in laser ablation plume of POM", Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95221B (13 April 2015); https://doi.org/10.1117/12.2179855

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