The effect of electrohydrodynamic boundary layers on heat transfer from flame gases

Clements, R. M.; Smy, P. R.

doi:10.1016/0010-2180(77)90091-8

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…As shown in Figure 2, an aerodynamically stagnant layer of gas formed between the flowing plume and the sampler tip (20,15,16,(38)(39)(40). Formation of a space-charge sheath or electrical double layer in contact with the sampler was also probable (40)(41)(42)(43)(44). This composite boundary layer was in thermal contact with the relatively cool sampler.…”

Section: Resultsmentioning

confidence: 98%

“…As the flowing plasma plume approached the sampler, the plume gas was deflected around the blunt sampler tip. As shown in Figure 2, an aerodynamically stagnant layer of gas formed between the flowing plume and the sampler tip (10, 15,16,[38][39][40]. Formation of a space-charge sheath or electrical double layer in contact with the sampler was also probable (40)(41)(42)(43)(44).…”

Section: Resultsmentioning

confidence: 99%

“…For example, solid deposition should be less significant in orifices of diameter >50 µ , which would also extract more ions into the vacuum system. A more streamlined, conical orifice assembly should deflect the plasma stream smoothly around the cone tip, instead of allowing a stagnant layer of gas to build up outside the extraction orifice (Figure 2) (10,11,15,16,38,40). Such refinements are expected to relax the compromise between powers of detection, dilution factors, and orifice lifetimes, thus facilitating application of the ICP-MS approach to elemental and isotopic determinations in samples of total solute content greater than 150 µg/mL.…”

Section: Thus the Precision Of The Isotopic Ratio Determinations Inmentioning

confidence: 99%

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Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace elements

Houk¹,

Fassel²,

Flesch³

et al. 1980

Anal. Chem.

717

264

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Thus the Precision Of The Isotopic Ratio Determinations Inmentioning

confidence: 99%

See 1 more Smart Citation

Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace elements

Houk¹,

Fassel²,

Flesch³

et al. 1980

Anal. Chem.

717

264

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Mass Spectrometric Evidence for Suprathermal Ionization in an Inductively Coupled Argon Plasma

1981

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Mass spectra have been obtained of species in the axial channel of an inductively coupled argon plasma by extracting ions from the inductively coupled plasma into a vacuum system housing a quadrupole mass spectrometer. Ionization temperatures ( Tion) are obtained from relative count rates of m/z-resolved ions according to two general types of ionization equilibrium considerations: (a) the ratio of doubly/singly charged ions of the same element, and (b) the ratio of singly charged ions from two elements of different ionization energy. The Tion values derived from measurement of Ar+2/Ar+, Ba+2/Ba+, Sr+2/Sr+, and Cd+/I+ are all greater than those expected from excitation temperatures measured by other workers. The latter three values for Tion are in reasonable agreement with values obtained by optical spectrometry for a variety of argon inductively coupled plasmas.

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Atomic Emission Spectrometry with a Skimmed Inductively Coupled AR Plasma

Montaser

Fassel

1982

Appl Spectrosc

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A skimmer located below the usual observation height of an inductively coupled plasma (ICP) allows the axial channel region of the ICP to flow through the central hole of the skimmer while the outer Ar flow is deflected. Signal-to-background (S/B) ratios and the estimated detection limits measured immediately above the skimmer were generally 5 to 20 times superior to the best results obtained by the conventional ICP system. The highest S/B lines possessed wavelengths greater than 300 nm. Matrix effect studies on the Ca-PO4 and the Ca-Al systems revealed that the skimmed plasma was as free of vaporization-atomization interference as the conventional plasma, but easily ionizable elements produced a greater level of suppression/enhancement effects. Electron number densities, as determined via the series limit line merging technique, were lower in the skimmed plasmas as compared with the conventional ICP's.

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The effect of electrohydrodynamic boundary layers on heat transfer from flame gases

Cited by 3 publications

References 6 publications

Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace elements

Inductively coupled argon plasma as an ion source for mass spectrometric determination of trace elements

Mass Spectrometric Evidence for Suprathermal Ionization in an Inductively Coupled Argon Plasma

Atomic Emission Spectrometry with a Skimmed Inductively Coupled AR Plasma

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