Stark broadening of Balmer lines at low electron densities

Ferguson, E. E.; Schlüter, H.

doi:10.1016/0003-4916(63)90383-x

Cited by 22 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this is a complicated and experimentally demanding technique not suitable for the industrial practice. By means of standard OES, the Stark broadening of higher Balmer lines was already measured in [25][26][27] . In [28][29][30][31][32][33] ) using an extrapolation method comparable with ours, although no secondary diagnostic method was applied to check the density values obtained.…”

Section: Introductionmentioning

confidence: 99%

Hβ Stark broadening in cold plasmas with low electron densities calibrated with Thomson scattering

Palomares

Hübner

Carbone

et al. 2012

Spectrochimica Acta Part B: Atomic Spectroscopy

View full text Add to dashboard Cite

In the present work Stark broadening measurements have been carried out on low electron density (n e b 5·10 19 m −3) and (relatively) low gas temperature (T g b 1100 K) argon-hydrogen plasma, under low-intermediate pressure conditions (3 mbar-40 mbar). A line fitting procedure is used to separate the effects of the different broadening mechanisms (e.g. Doppler and instrumental broadening) from the Stark broadening. A Stark broadening theory is extrapolated to lower electron density values, below its theoretical validity regime. Thomson scattering measurements are used to calibrate and validate the procedure. The results show an agreement within 20%, what validates the use of this Stark broadening method under such low density conditions. It is also found that Stark broadened profiles cannot be assumed to be purely Lorentzian. Such an assumption would lead to an underestimation of the electron density. This implies that independent information on the gas temperature is needed to find the correct values of n e .

show abstract

Section: Introductionmentioning

confidence: 99%

Hβ Stark broadening in cold plasmas with low electron densities calibrated with Thomson scattering

Palomares

Hübner

Carbone

et al. 2012

Spectrochimica Acta Part B: Atomic Spectroscopy

View full text Add to dashboard Cite

show abstract

Anregung und Ionisation eines Wasserstoffplasmas unter dem Einfluß zweier Elektronengruppen unterschiedlicher Temperatur und Dichte

Drawin

1966

Annalen der Physik

View full text Add to dashboard Cite

Under certain experimental conditions it is necessary to explain the measurements by assumption of several groups of electrons independent of each other. For such a case the population densities and degress of ionization have been calculated for a steady-state hydrogen plasma from the coupled system of rate equations. It has been assumed that two independent groups of electrons are present having the density n, and n:. Further it is assumed that their distribution functions are Maxwellian, so that these groups can be described by temperatures T, and T:. The calculated population densities and ionization degrees are presented graphically as function of n:, n,, T, and Tf.

show abstract

Commission des Donnees Spectroscopiques Fondamentales

Moore-Sitterly

1967

Reports on Astronomy/Proceedings of the Thirteenth General Assembly Prague 1967

View full text Add to dashboard Cite

Stark broadening of Balmer lines at low electron densities

Cited by 22 publications

References 23 publications

Hβ Stark broadening in cold plasmas with low electron densities calibrated with Thomson scattering

Hβ Stark broadening in cold plasmas with low electron densities calibrated with Thomson scattering

Anregung und Ionisation eines Wasserstoffplasmas unter dem Einfluß zweier Elektronengruppen unterschiedlicher Temperatur und Dichte

Commission des Donnees Spectroscopiques Fondamentales

Contact Info

Product

Resources

About