Analysis of the sizes and number of microparticles in the ablation plume,which attenuates laser radiation during ablation of a constructive material |
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| Authors: | O G Tsarkova V B Tsvetkov A A Rukhadze S V Garnov V V Nazarenko P Ya Nosatenko |
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| Institution: | 1.Prokhorov General Physics Institute,Russian Academy of Sciences,Moscow,Russia;2.Joint Stock Company “Military-Industrial Corporation “NPO Mashinostroyenia”,Reutov, Moscow Oblast,Russia |
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| Abstract: | The effect of laser radiation with a wavelength of 1.3 μm, power of 25 kW, pulse width of 1 s, and irradiated spot area of 9 cm2 on carbon silicon carbide composite material (CSCCM) is analyzed. The formation of an ablation plume (which consists of vapor
of irradiated material, burning products, drops and microparticles of various chemical composition and size) above the irradiated
surface leads to a significant loss of laser energy. The fractions of the scattered and absorbed laser radiation in the plume
are determined, the size and mass distributions of microparticles in the plume are estimated, their concentration is calculated,
and the microparticle escape velocities from the irradiated CSCCM surface are evaluated. |
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