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Dissociative Recombination of $${\text{Ne}}_{{\text{2}}}^{ + }$$ Molecular Ions with Electrons : Population of Ne(2р 54р) Atoms in a Decaying Plasma. / Gordeev, S. V.; Ivanov, V. A.; Skoblo, Yu. E.
в: OPTICS AND SPECTROSCOPY, Том 127, № 3, 01.09.2019, стр. 418-427.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Dissociative Recombination of $${\text{Ne}}_{{\text{2}}}^{ + }$$ Molecular Ions with Electrons
T2 - Population of Ne(2р 54р) Atoms in a Decaying Plasma
AU - Gordeev, S. V.
AU - Ivanov, V. A.
AU - Skoblo, Yu. E.
N1 - Gordeev, S.V., Ivanov, V.A. & Skoblo, Y.E. Dissociative Recombination of Ne+2 Molecular Ions with Electrons: Population of Ne(2р54р) Atoms in a Decaying Plasma. Opt. Spectrosc. 127, 418–427 (2019). https://doi.org/10.1134/S0030400X19090133
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Decaying neon plasma has been investigated by kinetic spectroscopy. The experimental conditions were neon pressure of 0.2–152 Torr and electron density in the initial stage of decay [e] ≤ 5 × 1010 cm–3. The plasma was created by a pulsed barrier discharge with electrodes on the outer surface of a cylindrical glass tube. The discharge frequency was 40–160 Hz. It has been shown based on a comparative analysis of the dependences of the intensities of spectral lines on the time and electron temperature in the afterglow that the 2р54р levels are clearly divided into two groups in terms of population mechanisms. The lower levels (from 3р10 to 3р3 (Paschen notations)) are related to dissociative recombination of Ne+ 2 molecular ions with electrons, and the lines emitted by them behaved identically to the lines of the transitions 2p53s ← 2p53p and 2p53p ← 2p53d up to pressures of 0.6 Torr. The kinetics of the upper levels (3р5, 3р2, 3р4, and 3р1) had a more complicated character, and, at low pressures, the populations of all 2p54p levels were related to a collisional-radiative recombination of Ne+ ions. Significant differences in the dependences of the relative populations of 3d- and 4p levels on neon pressure are discussed.
AB - Decaying neon plasma has been investigated by kinetic spectroscopy. The experimental conditions were neon pressure of 0.2–152 Torr and electron density in the initial stage of decay [e] ≤ 5 × 1010 cm–3. The plasma was created by a pulsed barrier discharge with electrodes on the outer surface of a cylindrical glass tube. The discharge frequency was 40–160 Hz. It has been shown based on a comparative analysis of the dependences of the intensities of spectral lines on the time and electron temperature in the afterglow that the 2р54р levels are clearly divided into two groups in terms of population mechanisms. The lower levels (from 3р10 to 3р3 (Paschen notations)) are related to dissociative recombination of Ne+ 2 molecular ions with electrons, and the lines emitted by them behaved identically to the lines of the transitions 2p53s ← 2p53p and 2p53p ← 2p53d up to pressures of 0.6 Torr. The kinetics of the upper levels (3р5, 3р2, 3р4, and 3р1) had a more complicated character, and, at low pressures, the populations of all 2p54p levels were related to a collisional-radiative recombination of Ne+ ions. Significant differences in the dependences of the relative populations of 3d- and 4p levels on neon pressure are discussed.
KW - decaying plasma
KW - dissociative recombination
KW - elementary processes
KW - molecular ions
KW - rate constant
UR - http://www.scopus.com/inward/record.url?scp=85073478073&partnerID=8YFLogxK
U2 - 10.1134/S0030400X19090133
DO - 10.1134/S0030400X19090133
M3 - Article
AN - SCOPUS:85073478073
VL - 127
SP - 418
EP - 427
JO - OPTICS AND SPECTROSCOPY
JF - OPTICS AND SPECTROSCOPY
SN - 0030-400X
IS - 3
ER -
ID: 51867798