| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000403509 |
| ISSN: | 0103-9733 |
| Authors: | Machida, M1 Daltrini, A.M2 Severo, J.H.F3 Nascimento, I.C3 Sanada, E.K3 Elizondo, J.I3 Kuznetsov, Y.K3 |
| Institutions: | 1Universidade Estadual de Campinas, Instituto de Fisica, Campinas, Sao Paulo. Brasil 2Centro de Excelencia em Tecnologia Eletronica Avancada S.A., Porto Alegre, Rio Grande do Sul. Brasil 3Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil |
| Year: | 2009 |
| Season: | Jun |
| Volumen: | 39 |
| Number: | 2 |
| Pages: | 270-274 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | The study of tokamak plasma light emissions in the vacuum ultraviolet (VUV) region is an important subject since many impurity spectral emissions are present in this region. These spectral emissions can be used to determine the plasma ion temperature and density from different species and spatial positions inside plasma according to their temperatures. We have analyzed VUV spectra from 500 A˚ to 3200 A˚ wavelength in the TCABR tokamak plasma including higher diffraction order emissions. There have been identified 37 first diffraction order emissions, resulting in 28 second diffraction order, 24 third diffraction order, and 7 fourth diffraction order lines. The emissions are from impurity species such as OII, OIII, OIV, OV, OVI, OVII, CII, CIII, CIV, NIII, NIV, and NV. All the spectra beyond 1900 A˚ are from higher diffraction order emissions, and possess much better spectral resolution. Each strong and isolated spectral line, as well as its higher diffraction order emissions suitable for plasma diagnostic is identified and discussed. Finally, an example of ion temperature determination using different diffraction order is presented |
| Disciplines: | Física y astronomía |
| Keyword: | Física nuclear, Plasma, Espectrometría, Radiación ultravioleta, Tokamak |
| Keyword: | Physics and astronomy, Nuclear physics, Plasma, Spectrometry, Ultraviolet radiation, Tokamak |
| Full text: | Texto completo (Ver PDF) |
