Abstract
The absorption of radiation by inhomogeneous plasma formed during multiphoton ionization of inert gas atoms has been studied. We considered conditions under which the incident radiation frequency is close to the plasma frequency in the depth of the plasma, where the photoelectron density is constant. Under these conditions, due to the expansion of the field penetration region into the plasma, the absorption coefficient increases significantly. The dependence of the absorption coefficient on the effective frequency of photoelectrons collisions with neutral atoms and on the thickness of the layer in which the photoelectron density grows linearly was found.
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Vagin, K.Y., Mamontova, T.V. & Uryupin, S.A. Absorption of Radiation with a Frequency Close to the Transparency Boundary of an Inhomogeneous Plasma Formed by Multiphoton Ionization of Inert Gas Atoms. J. Exp. Theor. Phys. 135, 789–795 (2022). https://doi.org/10.1134/S1063776122120196
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DOI: https://doi.org/10.1134/S1063776122120196