Experimental studies on beam-plume interaction was conducted when a pulsed Nd:YAG laser was irradiated on a Titanium target in the pressure range of 10 to 3×105 Pa. In this paper are described the energy dissipation processes of incident beam, constituent and fluidmechanical structure of plume, absorption and scattering of incident radiation in plume, and their effects on energy transfer of laser beam to target material.

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