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Photophysics of interstellar PAHS+ in the PIRENEA experiment

Published online by Cambridge University Press:  25 September 2002

M. Giard ,
J.P. Bernard ,
A. Klotz ,
I. Ristorcelli ,
C. Pech ,
P. Boissel ,
M. Armengaud ,
P. Frabel  and
C. Joblin
C. Pech
Affiliation:
CESR, CNRS et Université Paul Sabatier, BP. 4346, 31028 Toulouse Cedex 04, France
P. Boissel
Affiliation:
LCP, CNRS et Université Paris Sud, Bât. 350, 91405 Orsay Cedex, France
M. Armengaud
Affiliation:
CESR, CNRS et Université Paul Sabatier, BP. 4346, 31028 Toulouse Cedex 04, France
P. Frabel
Affiliation:
CESR, CNRS et Université Paul Sabatier, BP. 4346, 31028 Toulouse Cedex 04, France
C. Joblin
Affiliation:
CESR, CNRS et Université Paul Sabatier, BP. 4346, 31028 Toulouse Cedex 04, France
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Abstract

This paper reports the first results obtained on thephotodissociation of the isolated PAH cations 12C24H+12,13C12C23H+12 and 12C24H+10, usingthe astrochemistry experimental set-up PIRENEA.The dissociation patterns of these ions involvethe loss of pairs of hydrogen atoms. A first interpretation indicates that the-H2 dissociation path is favoured compared to the -H path in ourexperimental conditions. These results might have important implicationson the formation of H2 in the interstellar medium.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 4: Infrared and Submillimeter Space Astronomy: An International Colloquium to Honor the Memory of Guy Serra , 2002 , pp. 297
Copyright
© EAS, EDP Sciences, 2002

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