A high critical density is important for laser beam propagation into high density samples for uniform heating and efficient energy tramsmission and transport. Its increase under irradiation of intense linearly polarized laser light is analyzed and effects contributing are addressed. It is shown “experimentally ” that the concept of a cycleaveraged critical density is meaningful even at relativistic intensities and the corresponding overall Lorentz factor γ is determined and compared with analytical expressions. High γ values are of particular relevance for fast ignition in inertial confinement fusion
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.