Chamber for Controlled Atmosphere Spectral Excitation

Owen, Louis E.

doi:10.1364/josa.41.000139

Cited by 18 publications

(3 citation statements)

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“…Ellenberg and Owen (1951) developed a method of semiquantitative analysis patterned after that of Harvey (19^7). They used a 4 to 1 He to 02 mixture at a flow of 15 cfh through a fused silica chamber that had been described earlier by Owen (1951). The chamber consisted of a fused silica body with a quartz optical window at one end.…”

Section: Introductionmentioning

confidence: 99%

“…The spectra produced in these two atmospheres were considerably enhanced compared to the arcing in pure He and were accompanied by faster sample consumption. Suppression of CN bands was satisfactory for a semiquantitative analysis when using a mixed flow of admixed air or was an impurity in the gases used for the arcing atmospheres, the experiments were repeated using a fused silica gas chamber patterned after one designed by Owen (1951). The CN bands were not detected when an atmosphere of 26 cfh He and 4 cfh Oa was used, but they were noted when 24 cfh…”

Section: Introductionmentioning

confidence: 99%

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Controlled atmospheres for spectrochemical analysis

Annell¹

1956

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A review of the literature revealed many designs of electrode chambers which confined various gas atmospheres. The gases He, A, Oa, CQa, steam, or certain mixtures thereof were preferred in certain chamber designs, samples analyzed, elements determined, and excitation requirements. However, COa was found satisfactory when applied to one method of semiquantitative spectrographic analysis and used in conjunction with the final gas jet design described. Experiments with the gas jet and COa gas demonstrated that a relatively simple and reproducible method is available for the analysis of sample spectra in the intense CH band region from approximately 3500 to 4200 A. This part t of the spectrum contains many sensitive atomic and ionic excitation lines that can supplement other sensitive lines which may be obscured through interference.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controlled atmospheres for spectrochemical analysis

Annell¹

1956

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“…Wark (159) described a useful method for mounting semimicro samples for analysis by conventional arc and spark techniques. The use of inert atmospheres was found to enhance the emission spectra from the direct current arc (152) antf a simple chamber for controlled atmosphere excitation was devised (53,127). The effect of sample composition on the line intensity of different elements in the direct current arc was studied (130,140).…”

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confidence: 99%