- Tytuł:
-
Mesure de la Temperature Basees sur l'Observation du Premier Systéme Negatif de l'Azote
Temperature Measurements Based on the First Negative Spectrum of Nitrogen - Autorzy:
-
Nassar, H.
Czernichowski, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1929529.pdf
- Data publikacji:
- 1993-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
33.10.-n
33.20.-t
07.20.Ka
78.40.-q - Opis:
- Noisy, non-resolved emission spectra of the (0,0) 391.4 nm N$\text{}_{2}$$\text{}^{+}$ molecular band are employed for the rotational (and in some case vibrational) temperature evaluation in different sources in the range of 320-7900 K when the apparatus function of the recording system is unknown. The following sources are examined: an ovoid-shaped transferred arc at atmospheric pressure, a low-pressure transferred arc, a high-voltage high-pressure electric discharge, a low-pressure radio-frequency discharge, and an atmospheric pressure laminar plasma jet. The described method is based on a normalization of the experimental spectrum with respect to the (0,0) band-head amplitude followed by a point-to-point comparison of the real spectrum with respect to a computer simulated spectrum using the best-square fit criterion. This criterion is found as the good one: the relative error on temperature evaluation had the same order of magnitude as the noise-to-signal ratio, even if the last one was relatively high. It was also found that the rotational and vibrational temperatures in the radio-frequency discharge are very different, which indicates an out of thermodynamic equilibrium characteristic of such a discharge. The proposed method of temperature evaluation is shown as quite precise and simple to use for even the non-spectroscopists.
- Źródło:
-
Acta Physica Polonica A; 1993, 84, 2; 215-228
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł