Spectroscopic measurements in a titanium vacuum arc with different ambient gases
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876481500662202368 |
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| author | M. Pelloni |
| author_facet | M. Pelloni |
| contents | Spectroscopic measurements in a titanium vacuum arc with different ambient gases M. Pelloni F.O. Minotti H. Kelly D. Grondona Física, Astronomía y Matemáticas Spectral emission lines from a low pressure d-c arc discharge with a Ti cathode were studied in various ambientgases; N2, O2, and Ar. Light from the plasma was detected by an optical spectrometer multichannel analyzer(OSMA). The spectral intensities of Ti, Ti+, Ar and N2 were measured as a function of the gas pressure inthe range 5 x 10-3 - 0.5 mbar. The measurements were performed in the inter-electrode region at differentdistances from the cathode. For N2 and O2 as the filling gases, the intensities of Ti and Ti+ increase with the gas pressure up to pressure values of the order of 0.2-0.4 mbar, while they decrease for higher pressure values.With Ar gas, a different behavior of the Ti+ intensity was found; it presents an increasing general trend. The behavior of the lines was qualitatively analyzed in terms of the most relevant atomic processes that take place in the metallic plasma - gas structure (charge-exchange, electron impact excitation and ionization, etc.). It is found that the behavior of the observed spectral lines can be satisfactorily explained in terms of the relevance of these processes as functions of the neutral gas density and electron temperature. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434805 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.34 |
| format | Artículo científico |
| id | redalyc_46434805 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Spectroscopic measurements in a titanium vacuum arc with different ambient gases M. Pelloni Física, Astronomía y Matemáticas Spectroscopic measurements in a titanium vacuum arc with different ambient gases M. Pelloni F.O. Minotti H. Kelly D. Grondona Física, Astronomía y Matemáticas Spectral emission lines from a low pressure d-c arc discharge with a Ti cathode were studied in various ambientgases; N2, O2, and Ar. Light from the plasma was detected by an optical spectrometer multichannel analyzer(OSMA). The spectral intensities of Ti, Ti+, Ar and N2 were measured as a function of the gas pressure inthe range 5 x 10-3 - 0.5 mbar. The measurements were performed in the inter-electrode region at differentdistances from the cathode. For N2 and O2 as the filling gases, the intensities of Ti and Ti+ increase with the gas pressure up to pressure values of the order of 0.2-0.4 mbar, while they decrease for higher pressure values.With Ar gas, a different behavior of the Ti+ intensity was found; it presents an increasing general trend. The behavior of the lines was qualitatively analyzed in terms of the most relevant atomic processes that take place in the metallic plasma - gas structure (charge-exchange, electron impact excitation and ionization, etc.). It is found that the behavior of the observed spectral lines can be satisfactorily explained in terms of the relevance of these processes as functions of the neutral gas density and electron temperature. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434805 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.34 |
| title | Spectroscopic measurements in a titanium vacuum arc with different ambient gases |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434805 |