On the difficulty of N(S-4) atom recombination to explain the appearance of the pink afterglow in a N-2 flowing discharge

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Loureiro, J (Autor) Outra; P. A . Sá (Autor) FEUP; Guerra, V (Autor) Outra

Revista

Título: Journal of Physics D: Applied Physics

Vol. 39 Nº 1

Páginas: 122-125

ISSN: 0022-3727

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 21 Citações

Scopus - 21 Citações

Outras Informações

ID Authenticus: P-004-NQC

DOI: 10.1088/0022-3727/39/1/019

Abstract (EN): The possibility that the pink afterglow (PA) of a flowing nitrogen discharge occurs as a result of recombination of N(S-4) atoms is evaluated and discussed, based on a detailed kinetic model for a microwave discharge and post-discharge. The present simulation shows that the N-2(+)(B(2)Sigma(u)(+), u) states responsible for the emission of the PA cannot be created via an indirect mechanism initiated with atomic recombination. Alternatively, it is indicated that the PA may have its origin in non-resonant vibration-vibration energy-exchange processes between N-2(X (1)Sigma(g)(+), v) molecules, which lead to an overpopulation of high levels of the vibrational manifold.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4