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 -