Low-Pressure Barrier Discharge Spectroscopy. Afterglow with Ne Ne+2, Ne+, and Ne2+ Ions

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Low-Pressure Barrier Discharge Spectroscopy. Afterglow with Ne Ne⁺₂, Ne⁺, and Ne²⁺ Ions. / Ivanov, V. A.

In: OPTICS AND SPECTROSCOPY, 26.12.2021.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{59b3126d301a4d37b643bf7a16632f6a,

title = "Low-Pressure Barrier Discharge Spectroscopy. Afterglow with Ne Ne+2, Ne+, and Ne2+ Ions",

abstract = "Abstract: The radiation of decaying plasma formed by electron–ion recombination processes involving three neon ions: the molecular ion Ne$$_{2}^{ + }$$ and the atomic ions Ne+ and Ne2+ has been simulated. Such a combination of ions simultaneously involved in the formation of the plasma spectrum was first detected in the afterglow of a pulsed barrier discharge of a cylindrical configuration at neon pressures of less than 1 Torr and electron densities of less than 4 × 1010 cm–3. The main attention has been paid to the comparative analysis of the mechanisms of collisional radiative recombination of the Ne+ and Ne2+ ions based on the numerical solution of the system of differential equations for the densities of the ions and long-lived excited atoms in the afterglow considering the basic elementary processes in a decaying plasma with pulsed “heating” of electrons. The regularities of the relaxation of the electron temperature from the discharge values of several electron volts to 300 K in the late afterglow have been considered in detail. A comparison of the simulated solutions with the results of the measurements of the spectral line intensities by the multichannel photon counting method shows that, at their good agreement in the case of single-charge ions, an adequate description of the evolution of ion lines requires expanding the available data on the recombination of Ne2+ ions.",

keywords = "collisional radiative recombination, decaying plasma, dielectric barrier discharge, doubly charged ions, elementary processes, rate constant",

author = "Ivanov, {V. A.}",

note = "Publisher Copyright: {\textcopyright} 2021, Pleiades Publishing, Ltd.",

year = "2021",

month = dec,

day = "26",

doi = "10.1134/S0030400X21080099",

language = "English",

journal = "OPTICS AND SPECTROSCOPY",

issn = "0030-400X",

publisher = "Pleiades Publishing",

}

RIS

TY - JOUR

T1 - Low-Pressure Barrier Discharge Spectroscopy. Afterglow with Ne Ne+2, Ne+, and Ne2+ Ions

AU - Ivanov, V. A.

PY - 2021/12/26

Y1 - 2021/12/26

N2 - Abstract: The radiation of decaying plasma formed by electron–ion recombination processes involving three neon ions: the molecular ion Ne$$_{2}^{ + }$$ and the atomic ions Ne+ and Ne2+ has been simulated. Such a combination of ions simultaneously involved in the formation of the plasma spectrum was first detected in the afterglow of a pulsed barrier discharge of a cylindrical configuration at neon pressures of less than 1 Torr and electron densities of less than 4 × 1010 cm–3. The main attention has been paid to the comparative analysis of the mechanisms of collisional radiative recombination of the Ne+ and Ne2+ ions based on the numerical solution of the system of differential equations for the densities of the ions and long-lived excited atoms in the afterglow considering the basic elementary processes in a decaying plasma with pulsed “heating” of electrons. The regularities of the relaxation of the electron temperature from the discharge values of several electron volts to 300 K in the late afterglow have been considered in detail. A comparison of the simulated solutions with the results of the measurements of the spectral line intensities by the multichannel photon counting method shows that, at their good agreement in the case of single-charge ions, an adequate description of the evolution of ion lines requires expanding the available data on the recombination of Ne2+ ions.

AB - Abstract: The radiation of decaying plasma formed by electron–ion recombination processes involving three neon ions: the molecular ion Ne$$_{2}^{ + }$$ and the atomic ions Ne+ and Ne2+ has been simulated. Such a combination of ions simultaneously involved in the formation of the plasma spectrum was first detected in the afterglow of a pulsed barrier discharge of a cylindrical configuration at neon pressures of less than 1 Torr and electron densities of less than 4 × 1010 cm–3. The main attention has been paid to the comparative analysis of the mechanisms of collisional radiative recombination of the Ne+ and Ne2+ ions based on the numerical solution of the system of differential equations for the densities of the ions and long-lived excited atoms in the afterglow considering the basic elementary processes in a decaying plasma with pulsed “heating” of electrons. The regularities of the relaxation of the electron temperature from the discharge values of several electron volts to 300 K in the late afterglow have been considered in detail. A comparison of the simulated solutions with the results of the measurements of the spectral line intensities by the multichannel photon counting method shows that, at their good agreement in the case of single-charge ions, an adequate description of the evolution of ion lines requires expanding the available data on the recombination of Ne2+ ions.

KW - collisional radiative recombination

KW - decaying plasma

KW - dielectric barrier discharge

KW - doubly charged ions

KW - elementary processes

KW - rate constant

UR - http://www.scopus.com/inward/record.url?scp=85121660004&partnerID=8YFLogxK

U2 - 10.1134/S0030400X21080099

DO - 10.1134/S0030400X21080099

M3 - Article

AN - SCOPUS:85121660004

JO - OPTICS AND SPECTROSCOPY

JF - OPTICS AND SPECTROSCOPY

SN - 0030-400X

ER -

ID: 93688645