Energy of a single electron in gaseous media

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Анотація

The so-called «optical» approximation in the theory of electron energy spectrum in the presence of scattering centers with positive scattering length randomly distributed with the average density n_g is considered for a number of inert gases. The average minimal energy W of a single electron calculated beyond the optical approximation reveals a behavior qualitatively different from that of the same quantity W₀ derived within the optical approximation. Results of calculations are in qualitative agreement with experimental data available for the W(n_g)dependence for different cryogenic gases.