CN and AlO bands in the study of the carbon arc

Tawde, N. R.; Trivedi, Snehal

doi:10.1088/0959-5309/51/4/315

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Assignment of the emission lines in the CO−N 2 −H 2 O mixture is in Table 3 of the Supporting Information. Its LIDB emission spectrum is dominated by a strong band from the CN radical, specifically the electronic transition B 2 Σ + u −X 2 Σ + g . ,,− There are three sequences in the spectrum: Δ v = 1 in the 358 nm region, Δ v = 0 in the 388 nm region, and Δ v = −1 in the 415 nm region. These sequences appear in the spectrum as second orders as well.…”

Section: Resultsmentioning

confidence: 99%

Optical and X-ray Emission Spectroscopy of High-Power Laser-Induced Dielectric Breakdown in Molecular Gases and Their Mixtures

et al. 2006

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Large-scale plasma was created in molecular gases (CO, CO2, N2, H2O) and their mixtures by high-power laser-induced dielectric breakdown (LIDB). Compositions of the mixtures used are those suggested for the early earth's atmosphere of neutral and/or mildly reducing character. Time-integrated optical spectra emitted from the laser spark have been measured and analyzed. The spectra of the plasma generated in the CO-containing mixtures are dominated by emission of both C2 and CN radicals. A vibrational temperature of approximately 10(4) K was determined according to an intensity distribution in a vibronic structure of the CN (B2Sigma(+)u-X2Sigma(+)g) violet band. For comparison, the NH3-CH4-H2-H2O mixture has been irradiated as a model of the strongly reducing version of the early earth's atmosphere. In this mixture, excited CN seems to be significantly less abundant than C2. The LIDB experiments were in the molecular gases carried out not only in the static cell but also using a large, double stream pulse jet (gas puff target) placed in the vacuum interaction chamber. The obtained soft X-ray emission spectra indicate the presence of highly charged atomic ions in the hot core of high-power laser sparks.

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Section: Resultsmentioning

confidence: 99%

Optical and X-ray Emission Spectroscopy of High-Power Laser-Induced Dielectric Breakdown in Molecular Gases and Their Mixtures

et al. 2006

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“…In a study of the cyanogen and aluminum monoxide bands in the carbon arc, Tawde and Trivedi found that the central gaseous zone, where strong emission of cyanogen radiation occurs, has a temperature of 6200°K. (10).…”

Section: Quantitative Analysis In Cyanogen Band Regionmentioning

confidence: 99%