English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/75297
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Fast Processes in a N2O-Modulated Hollow Cathode Discharge: Excitation and Diffusion

AuthorsLos Arcos, Teresa de; Castillo, M. ; Domingo, Concepción ; Herrero, Víctor J. ; Sanz, M.M.; Tanarro, Isabel
Issue Date29-Apr-2013
CitationJournal of Physical Chemistry A 104, 8183-8193 (2000)
AbstractIn this work the changes in the infrared absorption of N2O observed in a hollow cathode discharge modulated by a 45 Hz square wave are studied by time-resolved infrared absorption spectroscopy, with a Fourier transform infrared (FTIR) spectrometer working in the step-scan mode. These variations are attributed to alternative population and depopulation of the ground state of N2O; on the other hand, no changes are observed in the total concentration of N2O and the major products of the discharge. The experimental results are explained by means of a simple kinetic model:  vibrational excitation processes are assumed to be the main cause of the observed effects, but an inhomogeneous distribution of the stable species and the incorporation of diffusion terms between the plasma volume and the rest of the discharge cell are shown to be crucial in order to justify the quick and sharp variations in the N2O ground-state population seen along the path of the IR beam. The influence of these effects has been verified also by mass spectrometric measurements of the temporal behavior of the concentration of the major products N2O, N2 and O2 at one end of the discharge cell and at different frequencies.© 2000 American Chemical Society
Description10 p.: gráf.
Publisher version (URL)http://pubs.acs.org/doi/pdfplus/10.1021/jp0010177
URIhttp://hdl.handle.net/10261/75297
DOI10.1021/jp0010177
ISSN1089-5639
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
2000-de los Arcos-JPC.pdf9,35 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.