Production of the excited Ne(2p 5 3p) atoms by dissociative recombination in the afterglow of high frequency neon discharge

Malinovský, Ľ.; Hong, Ch. J.

doi:10.1007/bf01597766

Cited by 6 publications

(9 citation statements)

References 7 publications

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“…This is confirmed by the results of experiments in a wide range of pressure changes [12,14,19], which clearly indicate the participation of collisions (7) in the formation of the afterglow spectrum at pressures above 1 Torr. It is obvious that correct data on α j values can be obtained at P Ne < 1 Torr only.…”

Section: Introductionsupporting

confidence: 57%

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Dissociative Recombination in the Afterglow of Low-pressure Barrier Discharge. Population of Ne(2p-=SUP=-5-=/SUP=-3d) Atoms

Иванов

2022

Optics and Spectroscopy

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The decaying neon plasma produced by the dielectric barrier discharge (DBD) in a cylindrical tube at a pressure of 0.1-40 Torr has been spectroscopically investigated to analyze the dissociative recombination (DR) of molecular ions with electrons as a mechanism for the formation of excited atoms. It is shown that, at the electron density in the afterglow less than 5·1010 cm-3 the DR is the dominant source of population of 3d levels at pressures PNe≥ 0.6 Torr. At lower pressures, the optical properties of the decaying plasma are formed to a greater extent by the collisional-radiative recombination of Ne+ ions. A significant variation of the relative intensities of the 3d->3p transition lines in the afterglow with a change in gas pressure was found, reflecting the effect of inelastic collisions on the formation of the spectrum of decaying plasma in the near infrared region. From measurements carried out at a pressure of 0.6 Torr, the relative values of the partial DR coefficients for the 3dj levels of the neon atom were found. Comparison of these data with measurements in the near ultraviolet region, containing the lines of 4p->3s transitions, indicates the need to take into account the cascade 4p->3d transitions to correctly solve the problem of the final products of dissociative recombination. Keywords: dielectric-barrier discharge, low-pressure plasma, optical emission spectroscopy, dissociative recombination, molecular ions, collisional-radiative recombination, cascade transitions.

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Section: Introductionsupporting

confidence: 57%

“…Spectroscopic observations [8][9][10][11][12][13][14] of the afterglow of a direct current (DC) or high-frequency (HF) current glow discharge in inert gases (except for helium [15]) have shown that DR populates the excited levels np 5 (n + 1)p, np 5 (n + 1)d and np 5 (n + 2)p (n is the principal quantum number of an unexcited electron).…”

Section: Introductionmentioning

confidence: 99%

Dissociative Recombination in the Afterglow of Low-pressure Barrier Discharge. Population of Ne(2p-=SUP=-5-=/SUP=-3d) Atoms

Иванов

2022

Optics and Spectroscopy

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“…Спектроскопические наблюдения [8][9][10][11][12][13][14] послесвечения тлеющего разряда постоянного (DC) или высокочастотного (HF) тока в инертных газах (исключением является гелий [15]) показали, что DR заселяет возбужденные уровни np5(n + 1)p, np5(n + 1)d и np5(n + 2)p (nглавное квантовое число невозбужденного электрона). Излучение на переходах с более высоких уровней, в работах, где оно было замечено [8][9][10]14], авторы связывали с ударно-радиационной рекомбинацией (C-RR) ионов Ne + :…”

Section: Introductionunclassified

“…Об этом свидетельствуют результаты экспериментов, проведенных в широком диапазоне изменения давления [12,14,19], которые однозначно указывают на участие столкновений (7) в формировании спектра послесвечения при давлениях выше 1 Torr. Очевидно, что корректные данные о значениях α j можно получить только при P Ne < 1 Torr.…”

Section: Introductionunclassified

“…Это отличие подтверждается также и реакцией интенсивностей на импульсный подогрев электронов. В качестве опорной линии 3p → 3s переходов была выбрана линия 585.2 нм, излучение которой переносит значительную долю потока DR[12]. Также видно, что помещая строб в достаточно позднее послесвечение, можно минимизировать вклад C-RR (рис.…”

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Диссоциативная рекомбинация в послесвечении барьерного разряда в неоне низкого давления. Заселение атомов конфигурации 2p-=SUP=-5-=/SUP=-3d

Иванов¹

2021

Оптика И Спектроскопия

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The decaying neon plasma produced by the dielectric barrier discharge (DBD) in a cylindrical tube at a pressure of 0.1–40 Torr has been spectroscopically investigated to analyze the dissociative recombination (DR) of molecular ions with electrons as a mechanism for the formation of excited atoms. It is shown that, at the electron density in the afterglow less than 5•1010 cm-3 the DR is the dominant source of population of 3d levels at pressures PNe ≥ 0.6 Torr. At lower pressures, the optical properties of the decaying plasma are formed to a greater extent by the collisional-radiative recombination of Ne+ ions. A significant variation of the relative intensities of the 3d -> 3p transition lines in the afterglow with a change in gas pressure was found, reflecting the effect of inelastic collisions on the formation of the spectrum of decaying plasma in the near infrared region. From measurements carried out at a pressure of 0.6 Torr, the relative values of the partial DR coefficients for the 3dj levels of the neon atom were found. Comparison of these data with measurements in the near ultraviolet region, containing the lines of 4p -> 3s transitions, indicates the need to take into account the cascade 4p -> 3d transitions to correctly solve the problem of the final products of dissociative recombination.

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Complex formation in electron-ion recombination of molecular ions

Johnsen¹,

Mitchell²

1998

Advances in Gas Phase Ion Chemistry

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Production of the excited Ne(2p 5 3p) atoms by dissociative recombination in the afterglow of high frequency neon discharge

Cited by 6 publications

References 7 publications

Dissociative Recombination in the Afterglow of Low-pressure Barrier Discharge. Population of Ne(2p-=SUP=-5-=/SUP=-3d) Atoms

Dissociative Recombination in the Afterglow of Low-pressure Barrier Discharge. Population of Ne(2p-=SUP=-5-=/SUP=-3d) Atoms

Диссоциативная рекомбинация в послесвечении барьерного разряда в неоне низкого давления. Заселение атомов конфигурации 2p-=SUP=-5-=/SUP=-3d

Complex formation in electron-ion recombination of molecular ions

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