Emission spectra of titanium and argon in argon/hydrogen glow discharge

Obradović, Bratislav M.; Kuraica, M. M.; Dojčinović, I. P.; Cvetanović, Nikola

doi:10.1007/s10582-006-0312-2

Cited by 3 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effects of molecular gases (H 2 , O 2 and N 2 ) on analytical glow discharges (GD) have been examined by many authors in the last few decades with the chief emphasis on the presence of hydrogen in an argon plasma. [1][2][3][4][5][6][7][8][9][10][11][12][13] The main results obtained, either by experimental studies or by computer modelling, reveal that the presence of hydrogen in an argon GD affects considerably the electrical characteristics of the discharge, the sputter rate of the analyte, the number densities of the various plasma gas ions and metastable atoms. The effects are greater than those produced by similar amounts of oxygen or nitrogen.…”

Section: Introductionmentioning

confidence: 99%

A glow discharge time-of-flight mass spectrometry (GD-TOFMS) study of the ‘hydrogen effect’ using copper, iron and titanium cathodes

Mushtaq

Steers

Whitby

et al. 2015

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

A glow discharge time-of-flight mass spectrometry (GD-TOFMS) study of the ‘hydrogen effect’ using copper, iron and titanium cathodes

Mushtaq

Steers

Whitby

et al. 2015

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

show abstract

Modifying argon glow discharges by hydrogen addition: effects on analytical characteristics of optical emission and mass spectrometry detection modes

et al. 2007

View full text Add to dashboard Cite

An overview of the effects produced by the presence of hydrogen in a glow discharge (GD), generated either in argon or in neon, is given. Extensive work related to the addition of hydrogen to GDs, coupled with optical emission spectrometry (OES) and mass spectrometry (MS), has been published in the last few years in an attempt to explain the processes involved in the discharge of mixed gases. Although numerous experimental results have already been explained theoretically, a complete understanding of the effects brought about by mixing hydrogen with argon (or another discharge inert gas) has not been reported yet. The use of theoretical models implemented using a computer has allowed the importance of some collisional and radiative processes in the inert gas plasma when hydrogen is present to be evaluated. This review shows, however, that both experimental work and theoretical work are still needed. The influence of small quantities of hydrogen on discharge parameters, such as electrical current or dc bias voltage, on crater shapes and on sputtering rates is thoroughly reviewed along with the effect on the analytical signals measured by OES and MS. Also, hydrogen-effect corrections needed to carry out proper calibrations for direct solid quantitative analyses are discussed.

show abstract

The effect of hydrogen and nitrogen on emission spectra of iron and titanium atomic lines in analytical glow discharges

Šmı́d

Steers

Weiss³

et al. 2008

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

It is now well known that traces of molecular gases such as hydrogen or nitrogen can affect significantly the electrical characteristics, sputtering rates and relative intensities of emission lines in glow discharge optical emission spectrometry (GD-OES). These changes, caused by the molecular gases which are very often present in the discharge for various reasons, have a serious impact on the accuracy of analytical results. Therefore, it is important to describe these effects in detail and to try to understand the processes involved. The results presented in this paper focus on the effects of hydrogen and nitrogen on intensities of atomic emission lines of iron and titanium. In the case of hydrogen, when intensity ratios (intensities measured in argon-hydrogen relative to those measured in pure argon) are plotted against the excitation energies of the lines, these intensity ratios increase with the excitation energy between approx. 3 and 5 eV for both elements studied. Furthermore, in the case of iron, several emission lines with the excitation energy between 5.3 and 5.6 eV are strongly enhanced in the presence of hydrogen. It has been also observed that this effect is more pronounced at lower currents. On the other hand, it has been found that nitrogen does not have any similar effect: the gradient of the intensity ratios of both elements is negligible or even negative and no emission lines are enhanced in the presence of nitrogen. A comparison was also made between direct current and radiofrequency powered glow discharges and very similar trends have been obtained.

show abstract

Emission spectra of titanium and argon in argon/hydrogen glow discharge

Cited by 3 publications

References 9 publications

A glow discharge time-of-flight mass spectrometry (GD-TOFMS) study of the ‘hydrogen effect’ using copper, iron and titanium cathodes

A glow discharge time-of-flight mass spectrometry (GD-TOFMS) study of the ‘hydrogen effect’ using copper, iron and titanium cathodes

Modifying argon glow discharges by hydrogen addition: effects on analytical characteristics of optical emission and mass spectrometry detection modes

The effect of hydrogen and nitrogen on emission spectra of iron and titanium atomic lines in analytical glow discharges

Contact Info

Product

Resources

About