In the spectroscopic studies of helium-neon plasma carried out earlier, a pronounced selectivity of the population of the 3p₁ level (according to Paschen), the upper one from the group of levels of the 2p⁵4p configuration of the Ne atom, was revealed. As the helium pressure increased, up to 60% of the intensity of all transitions 2p⁵4p-> 2p⁵3s was concentrated in the 352.05 nm line (3p₁-> 1s₂). In the present work, a mechanism is proposed for the growth of the relative population of the 3p₁ level with increasing He pressure, associated with the features of the collisional kinetics of the 3p_i states of the 2p⁵4p configuration. The reason for the significantly faster depletion of the lower 3p_i levels (i ≥ 2) compared to 3p₁, apparently, is the features of the mutual arrangement of the adiabatic terms of the Ne(2p⁵4p) + He(1s^{2 1}S₀) system. The mechanism of formation of selective population of the 3p₁ level considered in this work can be realized in a mixture of helium with neon and cannot be realized in pure neon, which corresponds to the results of spectroscopic studies. Model calculations of the part of the spectrum related to transitions 3p₁, 3p₄, 3p₂-> 1s_j were carried out for a fixed distribution of population flows 3p₁, 3p₄, 3p₂ and different helium pressures. Good agreement between the measurement results and the results of numerical modeling is observed. Keywords: helium-neon plasma, selective population, inelastic collisions of atoms, adiabatic terms, numerical modeling of excited state population.

Подсчитывается количество просмотров абстрактов ("html" на диаграммах) и полных версий статей ("pdf"). Просмотры с одинаковых IP-адресов засчитываются, если происходят с интервалом не менее 2-х часов.

Дата начала обработки статистических данных - 27 января 2016 г.