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The European Physical Journal D

, Volume 56, Issue 3, pp 325–334 | Cite as

Temperature dependence of the quenching of N2 (C 3Πu) by N2 (X) and O2 (X)

  • L. Pereira
  • A. MorozovEmail author
  • M. M. Fraga
  • T. Heindl
  • R. Krücken
  • J. Wieser
  • A. Ulrich
Molecular Physics and Chemical Physics

Abstract

The temperature dependences of the quenching rate constants of the states N2 (\({\rm C} \ {^{3}{ \rm \Pi }_{u}}\) v=0,1) by N2 (X) and of the state N2 (\({\rm C} \ {^{3}{ \rm \Pi }_{u}} \ v^{\prime}=0\)) by O2 (X) are studied. Time-resolved light emission from the gas was analyzed in the temperature range from 300 K to 210 K keeping the gas at constant density. In case of quenching by N2 (X), the quenching rate constant for the vibrational level v= 0 increases by (13 ±3)% with gas cooling whereas the quenching rate constant for v= 1 decreases by (5.0 ±2.5)% in this temperature range. For quenching by O2 (X), the quenching rate constant decreases by (3 ±2)% with gas cooling. The temperature variation of the N2 (C 3Πu v=0) emission intensity for pure nitrogen and dry air are calculated using the obtained quenching rate constants and is compared with the experimental data available in the literature.

Keywords

Decay Rate Emission Intensity Vibrational Level Pure Nitrogen Time Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • L. Pereira
    • 1
  • A. Morozov
    • 1
    • 2
    Email author
  • M. M. Fraga
    • 1
  • T. Heindl
    • 2
  • R. Krücken
    • 2
  • J. Wieser
    • 3
  • A. Ulrich
    • 2
  1. 1.LIP-Coimbra and Departamento de FísicaUniversidade de CoimbraCoimbraPortugal
  2. 2.Physik Department E12Technische Universität MünchenGarchingGermany
  3. 3.Coherent GmbH, Zielstattstrasse 32MünchenGermany

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