Determination of N and O-Atoms, of N<sub>2</sub>(A) and N<sub>2</sub>(X, v >13) Metastable Molecules and N<sub>2</sub><sup style="margin-left:-6px;">+</sup>Ion Densities in the Afterglows of Ar-N<sub>2</sub>Microwave Discharges

• 作者: Andre Ricard Hayat Zerrouki Jean-Philippe Sarrette
• 来源期刊: 分析科学方法和仪器期刊(英文)
• 学科: 化学
• 关键词: Ar-N2 Microwave Discharge Flowing Afterglow N-Atoms N2 Metastables N2+ Ions
• 年，卷（期）: fxkxffhyqqkyw_2015,（4）
• 页码范围: 59-65
• 页数: 7页
• 分类号: O6

摘要

Early afterglows of Ar-N2 flowing microwave discharges are characterized by optical emission spectroscopy. The N and O atoms, the N2(A) and N2(X, v > 13) metastable molecules and N2+ ion densities are determined by optical emission spectroscopy after calibration by NO titration for N and O-atoms and measurements of NO and N2 band intensities. For an Ar-xN2 gas mixture with × increasing from 2 to 100% at 4 Torr, 100 Watt and an afterglow time of 3 × 10- 3 s at the 5 liter reactor inlet, it is found densities in the ranges of (2 - 6) × 1014 cm- 3 for N-atoms, one order of magnitude lower for N2(X, v > 13) and for O-atoms (coming from air impurity), of 1010 - 1011 cm- 3 for N2(A) and of 108 - 109 cm- 3 for N2+.