Spectroscopic characterization of ion and electron populations in asolution-cathode glow discharge

MR Webb; GCY Chan; FJ Andrade; Gerardo Gamez Goytia; GM Hieftje

Spectroscopic characterization of ion and electron populations in asolution-cathode glow discharge

MR Webb, GCY Chan, FJ Andrade, Gerardo Gamez Goytia, GM Hieftje

Chemistry and Biochemistry

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Abstract

The ion and electron populations of a glow discharge that uses an electrolytic solution as the cathode (an electrolyte-cathode discharge or ELCAD) were investigated. This paper presents the first determinations of electron number density, ionization temperature, and degrees of ionization in the ELCAD. Spectroscopic techniques were used to keep from perturbing the plasma, a range of conditions was explored, and two regions (the negative glow and the positive column) were observed. By using the Stark broadening of the hydrogen beta line, electron number densities near 8.5 x 10(14) cm(-3) for the negative glow and 2.5 x 10(14) cm(-3) for the positive column were found. From those results and measurements of the relative strengths of Mg neutral and ionic lines, ionization temperatures of 5000 K for the negative glow and 4600 K for the positive column were calculated. From these results, the degrees of ionization and norm temperatures were estimated for a variety of elements. Analytical im

Original language	English
Pages (from-to)	525-530
Journal	Journal of analytical atomic spectrometry
State	Published - May 2006

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@article{cdbf120bdcd14ca58fe91da62be75106,

title = "Spectroscopic characterization of ion and electron populations in asolution-cathode glow discharge",

abstract = "The ion and electron populations of a glow discharge that uses an electrolytic solution as the cathode (an electrolyte-cathode discharge or ELCAD) were investigated. This paper presents the first determinations of electron number density, ionization temperature, and degrees of ionization in the ELCAD. Spectroscopic techniques were used to keep from perturbing the plasma, a range of conditions was explored, and two regions (the negative glow and the positive column) were observed. By using the Stark broadening of the hydrogen beta line, electron number densities near 8.5 x 10(14) cm(-3) for the negative glow and 2.5 x 10(14) cm(-3) for the positive column were found. From those results and measurements of the relative strengths of Mg neutral and ionic lines, ionization temperatures of 5000 K for the negative glow and 4600 K for the positive column were calculated. From these results, the degrees of ionization and norm temperatures were estimated for a variety of elements. Analytical im",

author = "MR Webb and GCY Chan and FJ Andrade and {Gamez Goytia}, Gerardo and GM Hieftje",

year = "2006",

month = may,

language = "English",

pages = "525--530",

journal = "Journal of Analytical Atomic Spectrometry",

issn = "0267-9477",

publisher = "Royal Society of Chemistry",

}

TY - JOUR

T1 - Spectroscopic characterization of ion and electron populations in asolution-cathode glow discharge

AU - Webb, MR

AU - Chan, GCY

AU - Andrade, FJ

AU - Gamez Goytia, Gerardo

AU - Hieftje, GM

PY - 2006/5

Y1 - 2006/5

N2 - The ion and electron populations of a glow discharge that uses an electrolytic solution as the cathode (an electrolyte-cathode discharge or ELCAD) were investigated. This paper presents the first determinations of electron number density, ionization temperature, and degrees of ionization in the ELCAD. Spectroscopic techniques were used to keep from perturbing the plasma, a range of conditions was explored, and two regions (the negative glow and the positive column) were observed. By using the Stark broadening of the hydrogen beta line, electron number densities near 8.5 x 10(14) cm(-3) for the negative glow and 2.5 x 10(14) cm(-3) for the positive column were found. From those results and measurements of the relative strengths of Mg neutral and ionic lines, ionization temperatures of 5000 K for the negative glow and 4600 K for the positive column were calculated. From these results, the degrees of ionization and norm temperatures were estimated for a variety of elements. Analytical im

AB - The ion and electron populations of a glow discharge that uses an electrolytic solution as the cathode (an electrolyte-cathode discharge or ELCAD) were investigated. This paper presents the first determinations of electron number density, ionization temperature, and degrees of ionization in the ELCAD. Spectroscopic techniques were used to keep from perturbing the plasma, a range of conditions was explored, and two regions (the negative glow and the positive column) were observed. By using the Stark broadening of the hydrogen beta line, electron number densities near 8.5 x 10(14) cm(-3) for the negative glow and 2.5 x 10(14) cm(-3) for the positive column were found. From those results and measurements of the relative strengths of Mg neutral and ionic lines, ionization temperatures of 5000 K for the negative glow and 4600 K for the positive column were calculated. From these results, the degrees of ionization and norm temperatures were estimated for a variety of elements. Analytical im

M3 - Article

SP - 525

EP - 530

JO - Journal of Analytical Atomic Spectrometry

JF - Journal of Analytical Atomic Spectrometry

SN - 0267-9477

ER -